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Page 39
... radio receivers . Tubes rely on a flow of electrons between two points in a vacuum . ( They are thus an " electronic " rather than an electromechanical device . ) The flow can be varied , or shut off entirely , by varying the current on ...
... radio receivers . Tubes rely on a flow of electrons between two points in a vacuum . ( They are thus an " electronic " rather than an electromechanical device . ) The flow can be varied , or shut off entirely , by varying the current on ...
Page 42
... radio receiver . It could also be used as a switch . But unlike a tube the transistor required no warm - up time and ... radios , about a quarter of the size of the smallest vacuum - tube portables , appeared on the market in the mid ...
... radio receiver . It could also be used as a switch . But unlike a tube the transistor required no warm - up time and ... radios , about a quarter of the size of the smallest vacuum - tube portables , appeared on the market in the mid ...
Page 156
... Radio and television sets , meanwhile , like telephones , have grown smaller , more easily portable , cheaper , and smarter . In this context the home computer may have a very spe- cific role to play . In the past , electronic ...
... Radio and television sets , meanwhile , like telephones , have grown smaller , more easily portable , cheaper , and smarter . In this context the home computer may have a very spe- cific role to play . In the past , electronic ...
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Aiken Altair Analytical Engine Apple Apple II Atari automobile Babbage Babbage's began bulb buyers calculator called cards Charles Tandy chip circuits Commodore company's CompuServe computerized consumer cost customers databases designed device Digital Digital Research dollars early Eckert and Mauchly electric electronic engineer ENIAC example firm Fishman Gates Goldstine grams Harvard hobbyists Hollerith home computers IBM's IMSAI industry Infoworld instructions Intel invention Knight-Ridder later machine magazine manufacturers microprocessor million minicomputers MITS Model Neumann package pany percent personal computers Pertec popular programs puter quoted Radio Shack Roberts School selling Seuss Seuss and Bowman Snooper Troops Snyder software company sold sort Spinnaker Spinnaker's subscribers switches Tandy telephone television Texas Instruments tion told Tom Snyder Tramiel transistors turn Univac video games videotex Viewtron VisiCalc wired WordStar Wozniak