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 Differentiate between PL/SQL functions and procedures Question 2 Draw the diagram of logical structure of oracle database and explain it in brief Question 3 D


Simulated Annealing One way to answer the problem of local maxima and related problems like ridges and plateaux in hill climbing is to permit the agent to go downhill to some e

4. Provide a list of productid’s, the name of the vendor and their credit rating. The results should be ordered by last name and then by credit rating. Write out the SQL that wo

QUESTION (a) Give the appropriate syntax to implement a Client-Side Image Map, specifying all possible attributes where required (b) List the benefits of using Cascading Sty

Access time: Access time: This is the time required to locate and retrieve stored data from the storage unit in response to a program instruction. That is the time interval be

QUESTION (a) Can SSL be used to encrypt email data? Justify your answer (b) What are the three basic security provided by SSL? (c) State the port number used by applicati

Please what is the different between computer science and information technology? Which of this require too much reading? Thanks

two characteristics og CISC architecture?

Question 1 Brief about the shells of Linux operating system Question 2 Explain briefly about GNOME desktop Question 3 Write note on the following Encryption Sig