1.What is a Computer?
Computer is an electronic machine that can store, recall and process data. It can perform tasks or complex calculation according to a set of instructions or programs.
2.What is Input Unit?
Computers need to receive data and instructions in order to solve a problem. The Input unit performs this operation. The Input Unit basically links the external world or environment to the computer system. The input unit may consist of one or more input devices.
3.What is Central Processing Unit (CPU)?
It is the main part of a computer system like the heart of a human being. Most computers are identified by the type of CPU that is present in them. The function of the CPU is to interpret the instructions in the program and execute them one by one. It consists of two major units.
4.What is Control Unit?
It controls and directs the transfer of program instructions and data between various units. The main activity is to maintain order and direct the operations of the entire system.
5.What is ALU?
Arithmetic and Logic Unit performs arithmetic and logical operations and controls the speed of these operations. Arithmetic operations like addition, subtraction, multiplication and division (+,-,*, /) and logical operations.
6.What is Memory Unit?
The data and the instructions required for processing have to be stored in the memory unit before the actual processing starts. In a similar manner, the results generated from processing have to be preserved before it is displayed.
7.What is Output Unit?
It is used to print or display the results, which are stored in the memory unit. The actual function of the output unit is just the reverse of the input unit. Thus, the output unit links the computer to the outside world. The Monitor and Printer are the most commonly used output devices.
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OVERVIEW OF COMPUTER
Computer is an electronic machine that can store, recall and process data. It can perform tasks or complex calculation according to a set of instructions or programs.
2.What is Input Unit?
Computers need to receive data and instructions in order to solve a problem. The Input unit performs this operation. The Input Unit basically links the external world or environment to the computer system. The input unit may consist of one or more input devices.
3.What is Central Processing Unit (CPU)?
It is the main part of a computer system like the heart of a human being. Most computers are identified by the type of CPU that is present in them. The function of the CPU is to interpret the instructions in the program and execute them one by one. It consists of two major units.
4.What is Control Unit?
It controls and directs the transfer of program instructions and data between various units. The main activity is to maintain order and direct the operations of the entire system.
5.What is ALU?
Arithmetic and Logic Unit performs arithmetic and logical operations and controls the speed of these operations. Arithmetic operations like addition, subtraction, multiplication and division (+,-,*, /) and logical operations.
6.What is Memory Unit?
The data and the instructions required for processing have to be stored in the memory unit before the actual processing starts. In a similar manner, the results generated from processing have to be preserved before it is displayed.
7.What is Output Unit?
It is used to print or display the results, which are stored in the memory unit. The actual function of the output unit is just the reverse of the input unit. Thus, the output unit links the computer to the outside world. The Monitor and Printer are the most commonly used output devices.
learn more
OVERVIEW OF COMPUTER
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