Interactive Computing
Of course, bar codes have been with us for several years, plagued by high cost and ineffective system design which have dampened some usersa#39; enthusiasm. ... HP has introduced its new wand into two separate but complementary markets: its HEDS-3000 wand produces a TTL output data stream for connection to ... When the computer has verified the input, the operator is signalled, usually with a beep.
| Title | : | Interactive Computing |
| Author | : | Association of Computer Users (U.S.). |
| Publisher | : | - 1980 |
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