My computer Introduction of Computer Suraj I like to play games in computer
Latchiwala 976854213 1000 1/26/2002
Introduction of Computer Q1- What is computer? A1- Computer is an electronic machine which can store, retrieves and process data and can be programed with instruction and process data. A computer is a combination of hardware and software and can exist in a variety of sizes and configurations.
Hardware and software The term hardware refers to the physical computer of your computer such as the system unit, CPU, mouse, keyboard, monitor, etc. The software is the instruction that makes the computer work. Software is held either on your computer, hard discs, cd, rom, DVD, or in floppy disc.
Types of computer Mini computer Main computerAre very powerful used by large organizations such as banks to control the entire business.
Personal computer 1
Introduction of Computer Cheap and easy to use often use as stand along computer and in a network or may be connected to the large main from computer within companies.
Hardware computer
Key board Mouse Joy sticks Game pads Output devices
Monitor Printer Characteristics of computer
Speed – computers are very fast machine a powerful computer is capable of performing thousands of simple instruction per second.
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Introduction of Computer Accuracy – in addition to being fast computer are also accurate computer cannot occur any error while performing any task.
Diligence- Computer are highly consistence the do not suffer from traits of boredom and tired ness resulting in lack of concentration computer are better than human being is performing any task.
Versality- Computer is a versatile machine and is capable of performing any task as long as it can be broken down into a series of logical steps.
Storage capacity- Computer can store large amount of data at a time a piece of information once recorded in a computer can never be forgotten and can be retrieve any time.
Storage unit Input
Cu
Alu 3
Out put
Introduction of Computer Cu- control unit Alu- arithmetic logic unit
Shortcut key F1- Help F2- Rename file F5- Refresh the current window or program. Ctrl+n- New file Ctrl+o- Open the file Ctrl+b- bold Ctrl+i- italic Ctrl+u- under line text Ctrl+f- find Ctrl+s- fill save Ctrl+x- cut 4
Introduction of Computer Ctrl+delete- cut selected item Ctrl+c- copy Ctrl+v- paste Ctrl+y- redo Ctrl+z- undo Ctrl+k- hyper link Ctrl+p- print the document Ctrl+esc- open the start Manu Ctrl+shift+esc- window task manager Ctrl+f4- close the program Ctrl+a- all selected Ctrl+h- replace
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Introduction of Computer
Primary- memory can be farther classifieds ram and Rome. Ram- random asses’ memory Rom- read only memory Random asses memory is the place in a computer where the operating system, application programs and the data in current use are kept temporarily show that they can be access by the computer processors it is said to be volatile memory since program are accessible only as long as the computer is on. The contents of ram no more available once the computer is turn off.  Rom – read only memory is a spatial type of memory which can be read and right
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Introduction of Computer feather the content a program are not lost even when the computer is switch off. Rom also stores an initial program called the bootstrap ladder. Whose function is to start the operation of computer system ones the power is turn on. Generation technology is a change in it – A computer is bean use day by day is called generation. Now a day’s generation includes both hardware and software which together make up and entire computer system. There are totally 5 types of generation. 1st generation 1942-1954 1945-1956
2nd generation 1952-1964 3rd generation 1964-1972 4th generation 1971-1990
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Introduction of Computer 5th generation 1990-til now st
1 generation 1st generation of computer was (1942-1954). 1st generation of computer started with using vacuum tube for processing CPU. These tubes like electric. Produce a lot of heat therefore work very expensive and could by affordable only by a large organization. Vacuum to technology. Unreliable. Supported machine only. Very costly. Generation lots of heat. Need of AC. Huge size. Non portable. 8
Introduction of Computer ENIAC EDVAC UNIVAC IBM-701 IBM-650
2ND GENERATION In the generation of computer transistor were used in place of vacuum
They made of semi-conductor. They are more durable then vacuum tubes. 1. Ibm-1620- science purpose 2. Ibm-1401-biznus application 3. Cdc-3600- scientific purpose
Advantages – they were smaller than first generation. They generate less heat. They took less computer time. They were less prawn failure. 9
Introduction of Computer Disadvantages- they require ac. They require frequency observation. They were difficult to purchase.
3rd generation-(1964-1971) Ice and also called chip Ices have more compact then a transistor single ice have many transistor resister and capacitor placed on single then silicon. IBM 360 (1964-IBM com) PDP 8 (1965- DCE com) PDP 11 (1970- DCE com) CRA 1 (1974) VAX (1978)
rd
3 generation advantages10
Introduction of Computer
They are very smaller in size. They generate less heat. They reduced computation time. They have low maintenance cost. They have easily portable. They were comparatively cheaper.
4th generation (9071) VLSI is very large integration technology. After the integration of integrated sweet computer could only get smaller in size since hundreds of computer could fit on one chip. The use of VLSI technology had squeezed thousands of computers in one time.
Full forms ALU- arithmetic logic unit AMD-advance micro devises
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Introduction of Computer ASCII- American slandered card for information interchange AT- advanced technology BIOS- basic input in put out put system CD- compact disc CDR- compact disc recorder CDRW- compact disc rewriter CDROM- compact disc read only memory CPU- central processing unit DDR- double data rate DRAM- dynamic random exes memory ECC- error correction code EEPROM- electrically erasable programmable read only memory EPROM- erasable programmable read only memory FDD- floppy disc drive GB- gaga bites GBPS- gaga bites per second GHZ- gaga hearts 12
Introduction of Computer HDD- hard disc drive IBM- international business matches corporation IC- integrated circuit ISO- international slandered KBPS- kilo bites per second LAN- local area network LED- liquid crystal display MAC- media access control MB- mega bites MBPS- mega bites per second MHZ- mega hertz PC- personal computer RAM- random access memory RO RAM- Rambus dynamic random access memory ROM- read only memory TB- tera bytes TBPS- tera bytes per second USB- universal serial bus 13
Introduction of Computer UTP- unshielded twisted pair VCD- video cd VPN- virtual private network VAN- video area network WTB- warn to buy
5th generation- Faster, more powerful, data storage, processing capacity new brands and model would come out the market almost every month. Computer became more affordable and portable computer can now be found in home, school, office, etc.
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