INVENTORS OF COMPUTER HARDWARE
INVENTORS OF COMPUTER HARDWARE
INVENTORS OF COMPUTER HARDWARE:
(1) Key board � Herman Hollerith, first keypunch
device in 1930�s
(2) Transistor � John Bardeen, Walter Brattain &
Wiliam Shockley (1947 - 1948)
(3) RAM � An Wang and Jay Forrester (1951)
(4) Trackball � Tom Cranston and Fred Longstaff
(1952)
(5) Hard Disk � IBM , The IBM Model 350 Disk File
(1956 )
(6) Integrated Circuit� Jack Kilby & Robert Noyce
(1958)
(7) Computer Mouse � Douglas Engelbart (1964)
(8) Laser printer� Gary Stark weather at XEROX in
1969.
(9) Floppy Disk� Alan Shugart & IBM( 1970)
(10) Microprocessor � Faggin, Hoff & Mazor � Intel
4004
Important abbreviations related to internet :
FM �>Frequency Modulation
SIM �>Subscriber Identity Module
RIM �>Removable Identity Module
GSM �>Global System For Mobile
LAN �>Local Area Network
WAN �>Wide Area Network
RTF �>Rich Text Format
MAN �>Metropolitan Area Network
URL �>Uniform Resource Locator
ISP �>Inter Net Service Provide
@�>At The Rate Of
DVD �>Digital Versatile Disk
CD �>Compact Disk
EDGE �>Enhanced Data for GSM Evolution
GPRS �>General Packet Radio Service
FDM �>Frequency Division Multiplexing
SDR �>Software Defined Radio
ATM �>Asynchronous Transfer Mode
DCA �>Dynamic Channel Allocation
FCA �>Fixed Channel Allocation
AMPS �>Advance Mobile Phone System
IMTS �>Improved Mobile Telephone System
CDMA �>Code Division
MultipleAccess
MTSO �>Mobile Telephone Switching
Office
HTTP �>Hypertext Transfer Protocol
FIDI �>Fiber Distributed Data Interface
ISDN �>Integrated Services Digital
Network
PSTN �>Public Switched Telephone Network
CSMA �>Carrier Sense Multiple Access
RADAR �>Radio Detection AndRanging
SONET �>Synchronous Optical Fiber Network
DAMPS �>Digital Advanced Mobile
Phone System
WWW �>World Wide Web
IP �>Internet Protocol
TCP �>Transmission Control Protocol
HTML �>HyperText Markup Language
USB �>Universal Serial Bus
PAN ->Personal Area Network
TDM ->Time Division Multiplexing.
