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Friday, November 9, 2018

November 09, 2018

Primary and Secondary Memory in Computer. Full Explanation


 Primary and Secondary Memory in Computer
 

Computer Memory– 

Memory is capacity part in computer. It is store the information, data, programs amid handling in computer. It stores information either incidentally or changeless premise. Memory used to vital job in sparing and recovering information.



Primary and Secondary Memory in Computer. Full Explanation
 Primary and Secondary Memory in Computer. Full Explanation


Types of Memory– Mainly computer have two types memory

 1.         Primary Memory/Volatile Memory.

2.         Secondary Memory/Non Volatile Memory.

I. Main Memory/ Primary Memor/Volatile Memory:

Primary memory is interior memory of the computer. It is otherwise called fundamental memory and Temporary memory .Primary Memory holds the information and guidance on which computer is right now working. Primary Memory is nature unstable or volatile. It implies when control is turned off it lost all information.

 Kinds of Primary Memory– Primary memory is by and large of two types.


1.         RAM

2.         ROM

1. RAM (Random Access Memory):

It remains for Random Access Memory.RAM is known as read or write memory. It by and large refereed as fundamental memory of the computer framework. It is a transitory memory. The data put away in this memory is lost as the power supply to the computer is turned off. That is the reason RAM is additionally called Volatile Memory.



Types of RAM– RAM is likewise of two kinds:

a) Static RAM:

Static RAM otherwise called SRAM ,hold put away data as long as the power supply is ON. SRAM are of higher drift and expend more power .They have higher speed than Dynamic RAM

b)Dynamic RAM:

Dynamic RAM otherwise called DRAM, its put away data in a brief span (a couple of milliseconds) despite the fact that the power supply is ON. The Dynamic RAM are less expensive and moderate speed and furthermore they devour less power.

2. ROM (Read Only Memory):

It remains for Read Only Memory. ROM is a Permanent Type memory. Its substance is not lost when control supply is turned off. Substance of ROM is chosen by the computer producer and for all time put away at the season of assembling. ROM can't be overwritten by the computer. It is likewise called "Non-Volatile Memory".



Types of ROM: ROM memory is three types names are following-

 1. PROM(Programmable Read Only Memory)- PROM chip is programmable ROM.it is PROM chips to compose information once and read many. Once chip has been modified ,the recorded data can't be changed. PROM is likewise nonvolatile memory.

2. EPROM (Erasable Programmable Read Only Memory)- EPROM chip can be customized over and over by deleting the data put away before in it. Data put away in EPROM uncovering the chip for quite a while bright light.

3. EEPROM (Electrically Erasable Programmable Read Only Memory)- The EEPROM is customized and deleted by unique electrical waves in millisecond. A solitary byte of information or the whole substance of gadget can be eradicated.

 II. Auxiliary Memory/Secondary Memory/Non Volatile Memory:

Secondary Memory is outside memory of the computer. It is otherwise called Auxiliary memory and lasting memory. It is utilized to store the distinctive projects and the data forever. Optional Memory is nature non unstable. It implies information is put away forever regardless of whether control is turned off. 

Some secondary memory are: 

1.   Floppy Disks

2.   Magnetic (Hard) Disk

3.   Magnetic Tapes


4.    Pen Drive

5.    Winchester Disk

6.    Optical Disk(CD,DVD)

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November 09, 2018

Basic Computer_What is Secondary Memory? Explain.


Secondary Memory:


You realize that processor memory, it is also known as  Primary Memory, is costly and in addition restricted. The quicker Primary Memory are also volatile in nature. In the event that we have to store expansive measure of information or projects for all time, we require a less expensive and changeless memory. Such memory is called secondary memory. Here we will talk about auxiliary memory gadgets that can be utilized to store huge measure of information, sound, video and sight and sound records.

What is Secondary Memory? Explain.
What is Secondary Memory? Explain.

 Qualities of Secondary Memory


These are a few qualities of secondary memory, which recognize it from Primary Memory −

•       It is non-unpredictable, i.e. it holds information when control is turned off

•       It is extensive abilities to the tune of terabytes

•       It is less expensive when contrasted with Primary Memory

Contingent upon whether auxiliary memory gadget is a piece of CPU or not, there are two kinds of secondary memory – settled and removable.

Give us a chance to take a gander at a portion of the secondary memory gadgets accessible.

 Hard Disk Drive




Hard disk drive is comprised of a progression of roundabout circles brought platters masterminded one over the other nearly ½ inches separated around an axle. Circles are made of non-attractive material like aluminum combination and covered with 10-20 nm of attractive material.

Standard distance across of these plates is 14 inches and they pivot with rates fluctuating from 4200 rpm (revolutions every moment) for PCs to 15000 rpm for servers. Information is put away by polarizing or demagnetizing the attractive covering. An attractive peruser arm is utilized to peruse information from and compose information to the circles. A commonplace present day HDD has limit in terabytes (TB).

CD Drive


Cd remains for Compact Disk. Albums are roundabout circles that utilization optical beams, generally lasers, to peruse and compose information. They are extremely shabby as you can get 700 MB of storage room for not exactly a dollar. Compact discs are embedded in CD drives incorporated with CPU bureau. They are versatile as you can discharge the drive, expel the CD and convey it with you. There are three sorts of CDs −

•       CD-ROM (Compact Disk – Read Only Memory) − The information on these CDs are recorded by the producer. Restrictive Software, sound or video are discharged on CD-ROMs.

•       CD-R (Compact Disk – Recordable) − Data can be composed by the client once on the CD-R. It can't be erased or altered later.

•       CD-RW (Compact Disk – Rewritable) − Data can be composed and erased on these optical plates over and over.

DVD Drive


DVD remains for Digital Video Display. DVD are optical gadgets that can store 15 times the information held by CDs. They are normally used to store rich media documents that require high stockpiling limit. DVDs likewise come in three assortments – read just, recordable and re-writable.

 Pen Drive
 

Pen drive is a compact memory gadget that utilizes strong state memory as opposed to attractive fields or lasers to record information. It utilizes an innovation like RAM, then again, actually it is nonvolatile. It is also called USB drive, key drive or glimmer memory.

Blu Ray Disk




Blu Ray Disk (BD) is an optical stockpiling media used to store top notch (HD) video and other sight and sound documented. BD utilizes shorter wavelength laser when contrasted with CD/DVD. This empowers composing arm to center all the more firmly around the circle and subsequently pack in more information. BDs can accumulate to 128 GB information.

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Thursday, November 8, 2018

November 08, 2018

What is a computer RAM and what does it do?


RAM

What is a computer RAM and what does it do?
What is a computer RAM and what does it do?

RAM is computer Primary Memory. On the other hand alluded to as principle memory, essential memory, or framework memory, Random Access Memory (RAM) is an equipment gadget that enables data to be put away and recovered on a PC. Smash is normally connected with DRAM, which is a kind of memory module. Since data is gotten to haphazardly rather than consecutively like it is on a CD or hard drive, the PC can get to the information substantially quicker. In any case, in contrast to ROM or the hard drive, RAM is an unpredictable memory and expects capacity to keep the information available. In the event that the PC is killed, all information contained in RAM is lost.

Tip: New clients regularly mistake RAM for plate drive space. See our memory definition for an examination among memory and capacity.

•           Types of RAM



•           Additional RAM data

•           History of RAM


•           Related RAM pages.

•           Computer memory help and support.

Types of RAM


Over the advancement of the PC there have been distinctive varieties of RAM. A portion of the more typical models are DIMM, RIMM, SIMM, SO-DIMM, and SOO-RIMM. The following is a precedent picture of a 512 MB DIMM PC memory module, a run of the mill bit of RAM found in personal computers. This memory module would be introduced into one of the memory openings on a motherboard.

Additional RAM data


As the PC boots, parts of the working framework and drivers are stacked into memory, which enables the CPU to process the directions quicker and accelerates the boot procedure. After the working framework has stacked, each program you open, for example, the program you're utilizing to see this page, is stacked into memory while it is running. In the event that such a large number of projects are open, the PC will swap the information in the memory between the RAM and the hard circle drive.

A PC's speed and execution is generally credited to the measure of memory in the PC. On the off chance that a PC does not have enough memory to run the working framework and programming programs being utilized, it will result in a slower execution. More memory in a PC enables it to proficiently run the working framework and any product projects, decreasing or dispensing with the requirement for documents and information to be swapped all through memory consistently.


History of RAM


The main type of RAM came to fruition in 1947 with the utilization of the Williams tube. It used a cathode beam tube (CRT) and information was put away on the substance of the CRT as electrically charged spots.

The second broadly utilized type of RAM was attractive center memory, imagined in 1947. Frederick Viehe is credited with a significant part of the work, having petitioned for a few licenses identifying with the plan. Attractive center memory works using modest metal rings and wires interfacing with each ring. One piece of information could be put away per ring and got to whenever.

Be that as it may, RAM as we probably am aware it today, as strong state memory, was first developed in 1968 by Robert Dennard. Referred to explicitly as powerful arbitrary access memory, or DRAM, transistors were utilized to store bits of information.

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November 08, 2018

What are the differentions among gear and programming?


What are the differentiations among gear and programming?


 
What are the differentiations among gear and programming?
What are the differentiations among gear and programming? 

PC hardware is any physical device used in or with your machine, while writing computer programs is a social occasion of code presented onto your PC's hard drive. For example, the PC screen you are using to examine this substance and the mouse you are using to investigate this site page is PC gear. The Internet program that empowered you to visit this page and the working system that the program is running on is seen as programming.

All item utilizes no short of what one gear contraption to work. For example, a PC diversion, which is modifying, uses the PC processor (CPU), memory (RAM), hard drive, and video card to run. Word planning programming uses the PC processor, memory, and hard drive to make and extra records.

In a PC, the hardware is the thing that makes a PC work. A CPU frames information and that information can be secured in RAM or on a hard drive. A sound card can offer sound to speakers, and a video card can give an image to a screen. The greater part of this is gear.



On that equal PC, programming can be acquainted and empower a man with speak with the hardware. A working structure, like Windows or macOS, is customizing. It gives a graphical interface to people to use the PC and other programming on the PC. At the point when a working is presented additional activities can be acquainted that empowers the customer with perform more particular endeavors, for instance, making reports and pictures.


Could a PC continue running without programming?

Windows XPIn most conditions, undoubtedly, a PC can continue running without writing computer programs being presented. In any case, if a working structure or interpreter isn't found on the PC, it either delivers a mix-up or doesn't yield any information. A PC needs most likely some kind of working system that empowers the customer and PC to connect with the PC gear.

Presenting programs onto the PC despite a working structure gives the PC additional capacities. For example, a word processor isn't required, yet it empowers you to make chronicles and letters.

Note: The item is frequently implied as the brain of a PC. A body can exist without an utilitarian personality. In any case, like a PC, without a cerebrum, your body won't be prepared to do much.

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Friday, November 2, 2018

November 02, 2018

Learning QBASIC and Storing Data in Computers Memories.

Introduction:

Basic stands for beginners all purpose symbolic instruction code.
It was invented by J.G Kemeny and  T.E Kurtz of dartmouth college in USA. It was first implemented in 1964 as a language for beginners. It is a very simple language with commands that are like words in the English Language. You can easily learn it and become its master. There are many versions of a basic language available today. Gw basic, Q Basic and Visual Basic and few of them. Q Basic is most popular version of these days will learn about quick basic in this post and how can we store data in Computer memory.
Learning QBASIC and Storing Data in Computers Memories.
Learning QBASIC and Storing Data in Computers Memories.


Printing:

The print command is used to show data on screen. Characters, sentences, text and numbers are printed using the print command.There are two basic keys to run Q Basic. the function key F5 is used to run the program and escape key is used to continue to the editor mode of the program.

Text Graphics:

The print command can also be used to print out shapes and pictures mode of a special characters from the keyboard.

Constants:

Constants are such value that do not change during the program execution. They remain fixed throughout the program. There are two types of constants.

1. Numeric Constants:

Numeric constants are numeric values. They contain digits 0 to 9. They can be additional, negative or positive number. Arithmetic operations are performed on a numeric constants. show  not include any special characters and are used only for calculations.
 Example 1667= positive values
                   -8= Negative Values
                   0.84= Decimal values

2. String Constants:

 String constant consist of a series of characters from the keyboard. they may be numbers letters for special characters and their represent many numeric quantities such as name addresses etc.
 Example "Rabi", "765", " hello123"

Variables: 

A variable is a location in computing memory that is labelled on it. It has a name and stores the data temporarily. The value of variable can change during the execution of program. Each variable is used to store only one kind of information. There are two types of variable as follows-

1. Numeric Variable:

Numeric variable contains a numeric value it is represented by digit or an alphabet or alphabet followed by alphabet.
Example: A,C,D2, 125

2. String Variable:

A string variable contains digit, letters, underscore symbol and it's a last characters is always a dollar sign. It is represented by an alphabet followed by a dollar sign.
Example: JR$ , Computer$

QBASIC Statement:

Instruction in Q Basic are called Q Basic statements. This statement perform various tasks. Q Basic has its own keywords and syntax rules. Syntax is the way in which an instruction is written properly.

Let Statement:

The LET statement is used to store information in computers memory. It is an assignment command and it is used to assign a value of a variable.

Print Statement:

We know that let statement can be used to store data into the computer memories and the print statement is used to retrieve or get back the store data and print it on the screen.
Example : PRINT " HELLO COMPUTER"

REM Statement:

REM statement adds comments in a program. Basically REM stands for Remark. in Q Basic REM only appears in the programming code it has no effect on the output of the program.
Example: REM This is Rem Statement.






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Monday, October 29, 2018

October 29, 2018

Computer Output Peripheral Details


 Computer Output Peripheral Details

 Screens

Screens, usually called as Visual Display Unit (VDU), are the fundamental yield gadget of a PC. It shapes pictures from minor spots, considered pixels that are masterminded in a rectangular frame. The sharpness of the picture relies on the quantity of pixels.

Computer Output Peripheral Details
Computer Output Peripheral Details

There are two sorts of survey screen utilized for screens.


•           Cathode-Ray Tube (CRT)

•           Flat-Panel Display

Cathode-Ray Tube (CRT) Monitor
 

The CRT show is liitle dots called pixel. The littler the pixels, the better the picture clearness or goals. It takes in excess of one lit up pixel to shape an entire character, for example, the letter 'e' in the word help.

A limited number of characters can be shown on a screen immediately.  Most screens are equipped for showing 80 characters of information on a level plane and 25 lines vertically.

There are a few burdens of CRT −


•           Large in Size

•           High control utilization

Level Panel Display Monitor

The level board show alludes to a class of video gadgets that have decreased volume, weight and power necessity in contrast with the CRT. You can drape them on dividers or wear them on your wrists. Current employments of level board shows incorporate adding machines, computer games, screens, PC phone, designs show.

The level board show is isolated into two classifications −


•           Emissive Displays − Emissive presentations are gadgets that proselyte electrical vitality into light. For instance, plasma board and LED (Light-Emitting Diodes).

•           Non-Emissive Displays − Non-emissive showcases utilize optical impacts to change over daylight or light from some other source into designs. For instance, LCD (Liquid-Crystal Device).

Printers




Printer is a yield gadget, or, in other words print data on paper.

There are two sorts of printers −
 

•           Impact Printers

•           Non-Impact Printers

Effect Printers


Effect printers print the characters by striking them on the strip, or, in other words on the paper.

Attributes of Impact Printers are the accompanying −

•           Very low consumable expenses

•           Very loud



•           Useful for mass printing because of minimal effort

•           There is physical contact with the paper to create a picture

These printers are of two sorts −

•           Character printers

•           Line printers

Character Printers


Character printers are the printers which print one character at any given moment.

These are additionally isolated into two sorts:

•           Dot Matrix Printer(DMP)

•           Daisy Wheel

Spot Matrix Printer


In the market, a standout amongst the most prevalent printers is Dot Matrix Printer. These printers are mainstream on account of their simplicity of printing and sparing cost. Each character printed is as example of specks and head comprises of a Matrix of Pins of size (5*7, 7*9, 9*7 or 9*9) which turn out to shape a character which is the reason it is called Dot Matrix Printer.

Favorable circumstances

•           Inexpensive

•           Widely Used

•           Other dialect characters can be printed

Detriments

•           Slow Speed

•           Poor Quality

Daisy Wheel


Head is lying on a haggle comparing to characters resemble petals of Daisy (bloom) or, in other words is called Daisy Wheel Printer. These printers are for the most part utilized for word-preparing in workplaces that require a couple of letters to be sent all over with exceptionally pleasant quality.

Points of interest

•           More dependable than DMP

•           Better quality

•           Fonts of character can be effectively changed

Hindrances

•           Slower than DMP

•           Noisy

•           More costly than DMP

Line Printers
 

Line printers are the printers which print one line at any given moment.

These are of two sorts −

•           Drum Printer

•           Chain Printer

Drum Printer




This printer resembles a drum fit as a fiddle thus it is called drum printer. The surface of the drum is partitioned into various tracks. A character set is decorated on the track. Diverse character sets accessible in the market are 48 character set, 64 and 96 characters set. One turn of drum prints one line. Drum printers are quick in speed and can print 300 to 2000 lines for each moment.

Favorable circumstances

•           Very rapid

Inconveniences

•           Very costly

•           Characters textual styles can't be changed

 Chain Printer


In this printer, a chain of character sets is utilized, consequently it is called Chain Printer. character set may 48, 64 and 96
Points of interest



•           Character text styles can without much of a stretch be changed.

•           Different dialects can be utilized with a similar printer.

Burdens

•           Noisy

Non-affect Printers

Non-affect printers print the characters without utilizing the lace. These printers print a total page at any given moment, in this way they are likewise called as Page Printers.

These printers are of two sorts −

•           Laser Printers

•           Inkjet Printers

Attributes of Non-affect Printers

•           Faster than effect printers

•           They are not uproarious

•           High quality



•           Supports numerous textual styles and distinctive character estimate

Laser Printers


These are non-affect page printers. They utilize laser lights to deliver the dabs expected to frame the characters to be imprinted on a page.

Points of interest

•           Very fast

•           Very amazing yield

•           Good designs quality

•           Supports numerous text styles and distinctive character estimate

Burdens



•           Expensive

•           Cannot be utilized to create numerous duplicates of a report in a solitary printing

Inkjet Printers


Inkjet printers are non-affect character printers dependent on a generally new innovation. They print characters by showering little drops of ink onto paper. Inkjet printers create amazing yield with satisfactory highlights.

They make less clamor in light of the fact that no pounding is done and these have numerous styles of printing modes accessible. Shading printing is additionally conceivable. A few models of Inkjet printers can create numerous duplicates of printing too.

Points of interest

•           High quality printing

•           More solid

Burdens

•           Expensive as the expense per page is high

•           Slow when contrasted with laser printer

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October 29, 2018

What is Leukemia?

Leukemia is a malignancy which begins in blood-shaping tissue, typically the bone marrow. It prompts the over-creation of strange white platelets, the piece of the invulnerable framework which shields the body against disease. 
What is Leukemia
What is Leukemia?

What is Leukemia?

Platelets are shaped in the bone marrow, the supple tissue found inside the bones. Blood-shaping foundational microorganisms partition to deliver either more undifferentiated cells or juvenile cells that end up develop platelets after some time. A blood immature microorganism may turn into a myeloid foundational microorganism or a lymphoid undifferentiated cell.

A myeloid undifferentiated organism winds up one of three kinds of develop platelets:

• Red platelets that convey oxygen to all tissues of the body.

• Platelets that frame blood clusters to quit dying.

• Granulocytes (white platelets) that battle contamination and malady.

A lymphoid immature microorganism turns into a lymphoblast cell and after that one of three kinds of lymphocytes (white platelets):

• B lymphocytes that make antibodies to help battle contamination.

• T lymphocytes that assistance B lymphocytes make the antibodies that assistance battle contamination.

• Natural executioner cells that assault tumor cells and infections.

Leukemia influences white platelets and can be arranged by the sort of white cell influenced (myeloid or lymphatic) and by the manner in which the illness advances (intense or ceaseless). Intense and constant don't allude to how genuine the infection is however to how quickly it advances.

What causes Leukemia? 


• Leukaemia isn't a condition which can be gotten from another person (infectious)

• Leukaemia isn't passed on from a parent to a tyke (acquired)

Hazard factors: 



• Age – most types of leukemia are more typical in more established individuals. The principle exemption to this is ALL in which crest occurrence is in youngsters

• Gender – leukaemias are by and large more typical in guys

• Genetics – in spite of the fact that leukemia isn't an acquired malady, there is a marginally higher shot that nearby relatives of patients may build up a few types of leukemia. The hazard is still little and there is no reason for uneasiness or for screening tests

Symptomps: 


• Red platelets that convey oxygen to all tissues of the body.

• Weakness, tiredness, shortness of breath, dazedness, palpitations

• Infections – because of absence of typical white platelets

• Infections are more continuous, more extreme and last more

• Fever, discomfort (general sentiment of ailment) and sweats

• Purpura (little wounds in skin), substantial periods, nosebleeds, draining gums

• Bleeding and wounding – because of absence of platelets

Treatment: 



The principle manners by which leukemia is dealt with are:

• Chemotherapy – cell-murdering drugs. Steroids are typically utilized alongside chemotherapy for lymphoid leukemia

• Radiation treatment – generally just for foundational microorganism transplant or nearby sickness e.g. in spleen

• Targeted treatment – drugs which particularly perceive and execute leukemia cells

• Biological treatment – medicines which utilize the resistant framework to pulverize leukemia cells. Regularly these utilization antibodies against markers on the leukemia – these are known as monoclonal antibodies.

• Stem cell transplant – Younger/fitter patients might be given an undifferentiated organism transplant (bone marrow transplant). This might be finished utilizing your very own sound foundational microorganisms or undifferentiated cells from a contributor. This is most normally improved the situation intense leukemia if chemotherapy does not fix the infection.
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Monday, October 22, 2018

October 22, 2018

Introduction to Ms Excel 2010



Today we will learn about MS Excel 2010.

MS Excel is a part of Microsoft Office 2010. when we need to install large amount of data in organised manner then we used MS Excel. MS Excel is a spreadsheet software that helps us to do the calculations and analysis of large amount of data.
Introduction to Ms Excel 2010
Know About Excel

What is MS Excel?

Microsoft Excel is one of the most used application software all time it is sheet containing data in the form of rows and columns . this sheet is called a spreadsheet. It is also known as the MS Excel That is part of Microsoft Office.

8 continents many built features which can help in doing difficult calculations and arithmetic expressions.
some another example of electronic spreadsheet is Lotus 123 and VP planner.

Advantage of spreadsheet program: 

There are various type of advantage available in a spreadsheet program. Some of these are-
It is easy to input data in the spreadsheet.It is easy to store large amount of data.Changes the data can be done quickly and easily without any changes.There are less chances to errors. Various types of charts shapes pictures at 17 can also be shown in the spreadsheet program.



Now we are going to how to open MS Excel 2010: 

If you want to open MS Excel in your PC follow these steps: at first you have click on start menu.
Then you click all programs.
Next click on Microsoft Office.
Next choose Microsoft Excel 2010.


Let's introduce about Microsoft Excel 2010 window:

MS Excel 2010 window also has a Ribbon quick access toolbar Microsoft Office button title bar etc.
Microsoft Excel on system of components that are unique to its window. some example of Microsoft components are worksheet and workbook cells range of cells name box formula bar see tab tab scrolling bar status bar etc.

What is called worksheet and workbook:

 The term worksheet in excel refers to single page that we used to enter information all data it is the area where we do all our work by default a worksheet is made up of cells perform the Great Britain on the face a worksheet has 1048576 rows and 16384 columns.
Row  header can be represented as 123456 and column header is presented by ABCD so on.

A set of worksheet is called workbook. And a single page of workbook is called worksheett.


What is cell: 

Every rectangle in worksheet is called cell it means the intersection of row and column is called cell.
And cell address can be represented by inputting at first the column header and footer row number. Example d5. d is the column number and 5 is the row number.


How many types of data can be entered in a spreadsheet program: there are 4 types of data can be entered in a Cell or in spreadsheet program. These are alphabet data numeric data formula and function.



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Saturday, August 4, 2018

August 04, 2018

What is computer? Working of a computer system.(Full Tutorials)



A computer is an electronic machine that is high speed. basically computer used widely in homes office banks Hospital supermarkets School defence and weather forecasting and many other places.


What is computer? Working of a computer system.(Full Tutorials)
What is computer? Working of a computer system.(Full Tutorials)

Working of a computer system:

A computer is a Programmable electronic device that works in IPO circle that means input processing output. Computer understand only two digits 0 and 1. 0 means off an 1 means on. It is also called binary language or machine language.
Input and output devices provided a means of communication between the computer and the outside world.

Input devices: some of the devices which are used to enter the data into computer are called input devices.
Example :keyboard, mouse, scanner ,joystick ,light pen etc.

Output devices: some of the devices which are used to display the process result or output are called output devices. Example:monitor, printer, plotter, speaker etc.

Computer and its main parts:


A computer is an electronic device which works in IPO (input processing output) circle. It processes input data to generate the output information.

Data is text or number or images or sound which is entered by us as input in the computer system.
Information is the output given by the computer after processing the data.

What the full form of computer: the full form of computer is common operating machine particularly used for trade education and research.The computer has two main components of which are defined the working of the computer these components are: hardware and software

What is hardware?



These are most physical devices of computer which we can see and touch on the basis of their functionality they are for the divided into different categories like as input,output,processing and storage.

What is called software:. 

Software is a set of instruction given to the computer to perform a task. We cannot touch or feel the software.
These are present in the form of programs.There are two types of software
1. System software which is responsible for managing and controlling hardware.
 2.application software which performs a specific task.

Features of a computer:

A computer is a defined following features:

Speed: 

The computers work at a very high speed they process the data in a fraction of second. They can solve tough mathematical calculations accurately computer can work very fast.

Accuracy: 

Computers are highly accurate they calculate the correct only if the input data is correct and they calculate errors if the computer given to a wrong input.

Storage: 

Computers can install a huge amount of data which can be retrieved as and when required the data can be stored in the primary memory and secondary memory of the computer system.

Versatility: 

Computer can be used by multi  user. It can perform different tasks at the same time.

Types of computers: 

Depending upon the construction size technology used and purpose computers are classified into four types.

1. Microcomputers:

 These are the most commonly used computers in a day to day life and they are characteristics by there is small size and less cost and they are also called personal computers or PC because of their designed meant for a single user or personal use.

Features of micro computers: 

CPU of microcomputer is single chip for a microprocessor.
They are used in office Home School dance etc.
They are not very bulky and take less space.

Some examples of micro computers are desktop computers and laptops pocket computers notebooks palmtops game consoles etc.

2. Mini computers:

 This computer are flexible and can be used by a large number of people at the same time. These are the general purpose computers. these are more powerful than microcomputers and also have greater storage capacity.

This can be used as a network and internet service. These are usually used by a small firms  and a business.

Features of mini computers:

They came into existence around 1960.
They are based on the transistor and core memory technology. For example PDP-8, Vax.

3. Mainframe computer: 

These are large powerful and expensive computers. They can support hundreds and thousands of users at a time. They are usually used in universities banks government organisations etc.
The example of Mainframe computer is PDP 10, IBMZ Series.

4. Super computer:

Supercomputers are the fastest and most powerful of all computers. They are very expensive and are generally used in a large processing of data is required
.

Features of supercomputer:

They are introduced in a 1960 centuries.They are used in the field of weather forecasting ,nuclear energy research, petroleum exploration and animated graphics.
Some example of supercomputers are Cray-1, PARAM, Beowulf etc.


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Thursday, August 2, 2018

August 02, 2018

Xiomi ने लॉन्च किया नया 4 जी फीचर फोन, अब जियो फोन से होगा मुकाबला




अब भारत में तहलका मचाने आ रहा है Xiomi का नया 4G Volte फीचर फोन Qin Ai. Xiomi ने अपना नया एक 4G फीचर फोन लांच कर दिया है। हालांकि यह फोन अभी सिर्फ चीन में लॉन्च हुआ है। ए एयरफोन 17 भाषाओं को सपोर्ट करता है। और इसमें Volte सर्विसेज भी मिल जाएगा।
फोन का कीमत: इस फोन काा कीमत 199 चीनी युआन। भारत मैं इसका कीमत होगा लगभग ₹2000।

फोन का स्पेसिफिकेशन: इस फोन मेंंंं आप लोगों को एंड्रॉयड ऑपरेटिंग सिस्टम मिलता है जो कि macor os 5 पर चलता है।
और इस फोन पर यूएसबी टाइप पोर्ट सी दिया गया है। डिस्प्ले कि अगर बात करते हैं तो इसमेंं आपको 2. 8 इंच काा डिस्प्ले मिलता है। और रैम यहां पर 256 एमबी रैम मिलताा है। और 512 एमबी स्टोरेज मिलता है। इस फोन पर 3 पॉइंट 5 mm का हेडफोन जैक भी है। फोन काा बैटरी 1480 m a h बैटरी बैकअप मिलता है।

इस फोन पर WhatsApp YouTube और थर्ड पार्टी एप्लीकेशन भी सपोर्टट करता हे।
फोन की फ्रंट कैमरा एंड बैक कैमरा के बारेे में अभी तक कुछ भी नहीं बोला गया है।
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