computer basic knowledge kush sharma
- 2. Defined computer Computer is a electronic data processing device that automatically. 1. Accept and start input data. 2. Process the same and 3. Output the processed results in the from reports.
- 3. Components of computer (model of digital computer) These are three components of computer:- 1. Input unit. 2. Central processing unit:- a) Memory. b) ALU. (arithmetic & logic unit) c) Control unit. 3. Output unit.
- 4. Full form of computer C – Commonly O – Operating M – Machine P – Partcurly U - Used for T - Triad E – Education R - Research
- 5. COMPONENT OF COMPUTER COMPONENT OF COMPUTER INPUT C P U OUTPUT
- 6. INPUT DEVICE By which can we can entre the data into computer. Ex. 1. Key board. 2. Mouse. 3. Scanner. 4. Pen drive. 5. Joy stick. 6. Light pen.
- 7. OUTPUT DEVICE By which can we can get the result. Ex. 1. Monitor 2. Printer 3. Projector 4. Micro phones 5. Speaker etc.
- 8. CENTRAL PROCESSING UNIT (C P U) Central processing unit-It start and process the data it manage and control all activities of computer. CPU is consider as the brain of computer it store the data and it control the operation of all parts of computer.
- 9. Sub parts of CPU 1. ALU. (Arithmetic & Logic unit) 2. Control unit. 3. Memory.
- 10. ARTHMETIC & LOGIC UNIT (ALU) Function of arithmetic section is to perform arithmetic operation . like addiction subtraction , multiplying and divided all complex operation are done by making reputed use for above operation. Function of logic section is to perform logic operation such as comparing selection matching and margining of data.
- 11. CONTROAL UNIT Control unit control the operation of all parts of computer it does not carry out any actual data processing operation.
- 12. MEMORY It start all the data to be process and instruction required from processing. 1. It start intermediate result of processing. 2. It store final result of processing before these result are release to an output device. 3. All input an output are figure to the main memory.