How does a computer do its job?

 How does a computer do its job?

 1. Through the means of input such as keyboard, mouse, scanner, etc., we send our instructions, programs and inputs to the data processor.

 2. The processor completes the work by following our instructions and programs.

 3. Information can be collected for future use on collection mediums such as hard disk, floppy disk etc.

 4. Once the program is followed, the output is sent to the screen, printer, etc.

 Central Processing Unit - Central Processing Unit is also known as Central Analytical Unit in Hindi.  It is clear from its name, it is the part of the computer where the computer analyzes the information received.  The Central Processing Unit (CPU) can be further divided into three parts.

 1. Control Unit

 2. ALU

 3. memory

 Control unit

 The control unit's control is to control the input and output devices of the computer.  The main functions of the control unit are -

 1. First to bring information / data to the controller with the help of input devices.

 2. Providing proper space in memory to information / data by the controller.

 3. Re-bringing information / data from memory into the controller and ALU  Send in

 4. To send the results obtained from ALU to the output devices and provide proper place in memory.

 Alu

 The unit of computer where all types of calculations can be done is called the economical and logical unit.

 Memory

 Keeping any instructions, information or result stored is called memory.  CPU of Computer  All the actions that take place in memory go to memory first.  Memory in technical form is the executive collection of computers.  Memory is a very important part of a computer where data, information and programs are located during the process and are available immediately when needed.

 Input device

 There are usually keyboards and icons.  The input device is like a tube through which data and instructions enter the computer.

 Output device

 An example is mainly screen and printer.  Apart from this, all those devices that tell you what the computer has edited are called output devices.

 Accumulated device

 This allows the computer to store a large amount of data permanently.  Example disk drive, tape drive.

Basic units

 The basic units of computer means those things from the computer that start the work of computer calculations.

 Bit

 Bit ie Binary digT is the smallest unit of computer memory.  It shows the accumulation of a binary digit 0 or 1 in memory.  It is a short form of binary digit.  Here a question arises that bit 0 and 1 is only Q not 3-4.  So the answer comes in two ways,

 - Because for mathematical calculation, scientists wanted a digit that does not affect the mathematical answer when advancing or decreasing any kind of calculation, then there are only 0 AC numbers that can be added to or subtracted from any digit.  Does not matter and 1 is the only number that does not matter if multiplied or divided with a digit.

 -On the other hand we know that 0 and 1 are shown on and off respectively in electronics.  The computer also recognizes the electron signal, hence 0 and 1 are used.

 Byte

 It's the standard unit of computer memory.  Every letter or number or special symbol pressed from the keyboard is stored in the ASCII Code in computer memory.  Each ASCII Code is of 8 byte.  Thus to store any letter in memory 8 bits together make 1 byte.

 Character

 Apart from numbers, there are signs that are used to convey language and meaning.  We see for example

 a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9!  @ # $% ^ & * () _ - = + |  \ ',.  /;  '[] {}: "<>?

 Computer systems commonly use ASCII code to store characters.  Each character is stored using 8 bits.