Changeset 777 in t29-www for en/computer
- Timestamp:
- May 3, 2015, 6:11:18 PM (9 years ago)
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en/computer/punchcard.php
r482 r777 70 70 IBM 029 (build since 1964), on the right hand the JUKI puncher 71 71 (made in Japan). The JUKI puncher is not accidentally looking 72 like the IBM: In 1971 IBM brought the puncher 129 on the market73 which buffers the content of the whole punchcard while reading. 74 Therefore IBM selled the licenseto reproduce the machine. In72 like the IBM: The type 129 card punch was introduced by IBM in 1971. It is capable of storing 73 the contents of a whole card prior to punching it, thus making corrections 74 possible. Therefore IBM selled the license of the 029 to reproduce the machine. In 75 75 1971, the IBM 029 costed about 15.500 DM. 76 76 </p> 77 77 78 <div class="box center auto-bildbreite" id="129"> 79 <img src="/shared/photos/rechnertechnik/ibm129.jpg" alt="IBM 129" width="580" height="375" /> 80 <p class="bildtext"><b>IBM 129 Card Data Recorder.</b></p></div> 81 82 <p> 83 IBM's answer to the electronic card punch UNIVAC 1710 was its most 84 sophisticated and last member of its venerable family of card punched, the 85 model 129. Every usable modern technology was incorporated in this device: Data 86 and punch programs were stored in a FET-based memory, early seven-segment LED 87 displays were used to diplay the current column, the card transport employed a 88 stepper motor. A very complex SLT-based control logic implements a wide 89 variety of features: Verification of punched cards, printing the data stored on 90 a card on its edge, storing up to six customized card formats etc.<br> 91 92 The IBM 129 is a rather rare find since the market for card punches was already 93 saturated in the early 1970s. In addition to this the decline of punch card 94 equipment was already forseeable.<br> 95 96 Our machine has a serial line interface as an add-on which we are currently 97 repairing. 98 </p> 99 100 78 101 <div class="box center auto-bildbreite" id="u1710"> 79 102 <a name="univac1710"><img src="/shared/photos/rechnertechnik/univac1710.jpg" alt="UNIVAC 1710 Verifying Interpreting Punch" width="580" height="435" /></a>
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