Changeset 222 in t29-www for en/computer
- Timestamp:
- Dec 18, 2010, 3:40:14 PM (13 years ago)
- Location:
- en/computer
- Files:
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- 2 edited
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en/computer/early-computers.shtm
r221 r222 10 10 --><!--#set var="next" value="analog.shtm" 11 11 --><!--#set var="next_title" value="Analog and hybrid computers" 12 --><!--#set var="credits" value="M. Kaye / Ann Arbor, MI, USA" 12 13 --><title>technikum29 - <!--#echo var="title" --></title> 13 14 … … 37 38 38 39 <p> 39 One of the museal highlights: The complete PDP-8 system with processor, 40 big tape deck TU 580 (originally belongs to the PDP-5, year of manufacture 41 1963), punch card reader/puncher PC 01, hard disc DF 32 with immovable heads 42 and a teletype as printer. The Classic PDP-8 is called the world's first mass-produced 43 "minicomputer". Without ICs or their ancestor it is a seccond-generation apparature. 40 One of the museum highlights: The complete PDP-8 system with processor, 41 a big tape deck TU-580 (originally belonged to the PDP-5, manufactured in 1963), 42 punch card reader/puncher PC-01, hard-disc DF-32 with immovable heads 43 and a teletype as printer. The Classic PDP-8 is considered the world's first mass-produced 44 "minicomputer". Due it's use of ICs, unlike its predecessors, it is considered 45 a second-generation computer. 44 46 <!-- The <b>Classic PDP 8</b> from DEC (Digital Equipment Corporation, Massachusetts): 45 47 He is considered to be the world's first mass-produced "minicomputer" (1965). "Mini" is relative: Only too very … … 55 57 56 58 <p>DEC's first calculator with integrated circuits was not cheap. The CPU on 57 its own (in the middle of the picture) without peripherals cost $27000 at that time.<br/>58 The main memory had a capacity of 8kB. While c alculating a "bigger" problem, possibly some files59 (programs, data) had to be swapped on a (magnetic) tape and read in afterwards. DEC developed60 a very intelligent operating system (OS/8) which could work very efficiently with such fewmemory.59 alone (pictured in the center) without peripherals cost $27000 at that time.<br/> 60 The main memory had a capacity of 8kB. While computing a "larg" problem, it was possible to swap 61 programs or data to files on magnetic tape and read in afterward be reread. DEC developed 62 an intelligent operating system (OS/8) which worked very efficiently with such little memory. 61 63 It is very interesting to watch this computer working.</p> 62 <p>If you have not yet seen such a computer, you should know that it is more than 2m high (with63 plotter) and has a weight of more than 300 kg.</p>64 <p>The peripherals consist of two TU 55 (tape drives), PC04 (high speed paper tape reader),65 Calcomp 563 plotter (at the top) and of course a teletype (not in the picture).</p>64 <p>If you have not been in the presence of this computer, you should know that it is quite large. 65 With the plotter, it stands at a height of almost 7' (2m) and weighting at more than 600 lbs (300kg).</p> 66 <p>The peripherals consist of two TU-55 (tape drives), a PC-04 (high speed paper tape reader), 67 Calcomp 563 plotter (at the top) and of course a teletype (not pictured).</p> 66 68 </div> 67 69 </div> -
en/computer/storage-media.shtm
r219 r222 159 159 -20° C to +50°C (-4°F to 122°F). 160 160 <br/>In this way the plated wire storage was developed, based on a couple of 161 genious ideas. Unfortunately, nowadays it is very error-prone.</p>161 ingenious ideas. Unfortunately, nowadays it is very error-prone.</p> 162 162 <p>Clicking on the photography will yield further informations about the 163 163 <a class="go" href="/en/devices/plated-wire-storage.shtm">design of the plated
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