1. COMPUTERS, LAPTOPS, SERVERS,EXPANSION SLOTS AND NETWORK INTERFACE CARDS KUMAR ASHISH(TR) TANMAY ANIKET NIKITA MANNI

2. COMPUTERS A programmable electronic device that stores, retrieve and process data. Access data(input) and processes it into useful information. Also data is put into secondary storage for later use. Processing of input into outputs is directed by the software but performed by the hardware. It understands only two states(OFF and ON – 0 and 1).

3. ORIGIN Abacus: first type of computing device. Invented in 300 B.C. by babylonians. Positions of beads represent numbers.

4. GENERATION OF COMPUTERS GENERATIONYEAR PERIODMAIN PROCESSING DEVICEADVANTAGESDISADVANTAGES FIRST1945-1956Vacuum tubesFirst device to hold memory Too bulky Maintenance problems SECOND1956-1963TransistorFastMaintance problems THIRD1964-1971ICSmaller in sizeSophisticated FOURTH1971IC’s with VLSICompact Less power consumtion No artificial intellince FIFTHPresent and beyond IC’s with parallel processingArtificial intelligence Expert system -----

5. HARDWARE COMPONENTS IN A COMPUTER SYSTEM Input devices Takes information from the user and convert it into electrical signals and transmits it to the processor. Output devices Which takes data from computer and makes it user friendly Processing devices Components responsible for the processing of information within the computer system. Storage devices Which allows data to be stored within a computer a system. Communication devices Provides connection between computer and communication networks.

6. Computer types Clients desktops laptops thin clients Servers tower server rack server blade server Stand alone PC’s tablet PC’s PDA’s