Block diagram of computer, Basic Computer Science

 

Input unit: These are used to read data and transfer to primary memory contained in CPU through keyboard or floppy disk or mouse etc.
Central Processing Unit (CPU): This consists of three divisions. They are:

1) Primary memory unit: This memory unit allows computer to store the data orinstruction read by input devices or data obtained by calculations in the program.

2) Control unit: This controls unit directs the operations of all units. This unit decodes and executes the instructions given in the program.

3) Arithmetic logic unit: This performs basic arithmetic operations like adding, subtracting, multiplicating, dividing and uses trigonometrical functions. It can also perform logical operations like comparing two variables, justifying the conditions. It can take many logical decisions.
Secondary memory or storage unit: These are external storage units and store data or program permanently on magnetic disk and magnetic tape.

 

1819_block diagram of computer.png

Output unit: Output unit is used to take data from primary memory and writes it on output devices like video display unit or printer etc. All these physical units and various other equipments in which the computer is made of is called ‘hardware'. The sequence of instructions given to a computer to solve any problem is called ‘software'.

 

Posted Date: 8/29/2012 2:23:48 AM | Location : United States







Related Discussions:- Block diagram of computer, Assignment Help, Ask Question on Block diagram of computer, Get Answer, Expert's Help, Block diagram of computer Discussions

Write discussion on Block diagram of computer
Your posts are moderated
Related Questions
Question 1 Name the different types of emitters and explain them in brief Question 2 List and explain the Particle Attributes Question 3 Explain Particle Collision

WHY ISN''T THE PRICE STORED ON THE BARCODE

draw the logic diagram of 2*4 decoder in only NOR gate .include enable inputs .

what is multiplaxer and truth table, digram

Department (DeptNo, DeptName, Office, Phone) Employee (EmpNo, FirstName, LastName, JobTitle, HireDate, Salary, MgrNo, Deptno) Customer (CustNo, CompanyName, Street, City, State, Zi

Desk Top Publishing Program: Desktop publishing programs contain many of the features of word processing software, but .go even further in the ability to layout the format of

For multi-national business IT system, free and open source software (FOSS) is recommended over a proprietary system. The reasons for this recommendation are: 1. Security I


THE SECOND GENERATION (1956-1965) This generation of computers were characterized by:     Considerable reduction in physical size     Increased reliability

Gareth's Gardens is a small firm that specialises in planning and laying new gardens.  A particularly popular garden plan consists of a patio and lawn, together with a circular pon