markpizz.github.io/lgp30.html at master · markpizz/markpizz.github.io · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
<HTML>
<HEAD>
  <!-- Created with AOLpress/2.0 -->
  <TITLE>LGP-30 Simulator Configuration</TITLE>
</HEAD>
<BODY>
<H1 ALIGN=Center>
  LGP-30 Simulator Configuration
</H1>
<P>
The LGP-30 was a small scientific and business computer. &nbsp;Introduced
in 1956, it used vacuum tube and diode logic and featured 4096 words of drum
based memory, and a Friden Flexowriter for input and output. &nbsp;(There
was also an optional high-speed paper-tape reader and punch.) &nbsp;The later
LGP-21 used transistor logic and a disk memory but was about three times
slower.
<P>
Photographs :
<UL>
  <LI>
    <A HREF="photos/lgp30.jpg">LGP-30</A>
  <LI>
    <A HREF="photos/lgp21.jpg">LGP-21</A> (courtesy of Tom Jennings)
</UL>
<P>
<TABLE BORDER="2" CELLPADDING="2">
  <TR>
    <TD><B>Option</B></TD>
    <TD><B>Description</B></TD>
    <TD><B>Capacity</B></TD>
  </TR>
  <TR>
    <TD>CPU and memory &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</TD>
    <TD>LGP-30</TD>
    <TD>4KW</TD>
  </TR>
  <TR>
    <TD></TD>
    <TD>LGP-21</TD>
    <TD>4KW</TD>
  </TR>
  <TR>
    <TD>Console</TD>
    <TD>Friden Flexowriter &nbsp; &nbsp;</TD>
    <TD></TD>
  </TR>
  <TR>
    <TD>Paper tape</TD>
    <TD>High speed reader</TD>
    <TD></TD>
  </TR>
  <TR>
    <TD></TD>
    <TD>High speed punch</TD>
    <TD></TD>
  </TR>
</TABLE>
<P>
  <HR>
<P>
<I><SMALL>Updated 30-Jan-2007 by Bob Supnik (simh AT trailing-edge DOT com
- anti-spam encoded)</SMALL></I>
</BODY></HTML>