ICL 1900 and ICT Character Codes
The I.C.T. 64-Character Card Code
Which holes are punched in an 80-column card on ICL mainframe computers
| Symbol | Name | Card Punching |
|---|---|---|
| 0 | zero | 0 |
| 1 | 1 | |
| 2 | 2 | |
| 3 | 3 | |
| 4 | 4 | |
| 5 | 5 | |
| 6 | 6 | |
| 7 | 7 | |
| 8 | 8 | |
| 9 | 9 | |
| space | NONE | |
| & | ampersand | 10 or 10/0 |
| # | number | 3/8 |
| @ | 4/8 | |
| ( | left parenthesis | 5/8 |
| ) | right parenthesis | 6/8 |
| ] | right bracket | 7/8 |
| A | 10/1 | |
| B | 10/2 | |
| C | 10/3 | |
| D | 10/4 | |
| E | 10/5 | |
| F | 10/6 | |
| G | 10/7 | |
| H | 10/8 | |
| I | 10/9 | |
| J | 11/1 | |
| K | 11/2 | |
| L | 11/3 | |
| M | 11/4 | |
| N | 11/5 | |
| O | 11/6 | |
| P | 11/7 | |
| Q | 11/8 | |
| R | 11/9 | |
| S | 0/2 | |
| T | 0/3 | |
| U | 0/4 | |
| V | 0/5 | |
| W | 0/6 | |
| X | 0/7 | |
| Y | 0/8 | |
| Z | 0/9 | |
| - | minus/hyphen | 11 |
| " | quotes | 11/0 |
| / | solidus | 0/1 |
| + | plus | 10/2/8 |
| . | stop | 10/3/8 |
| ; | semi-colon | 10/4/8 |
| : | colon | 10/5/8 |
| ' | apostrophe | 10/6/8 |
| ! | exclamation | 10/7/8 |
| [ | left bracket | 11/2/8 |
| $ | dollar | 11/3/8 |
| * | asterisk | 11/4/8 |
| > | greater than | 11/5/8 |
| < | less than | 11/6/8 |
| ↑ | up arrow | 11/7/8 |
| £ | pound | 0/2/8 |
| , | comma | 0/3/8 |
| % | percentage | 0/4/8 |
| ? | question | 0/5/8 |
| = | equals | 0/6/8 |
| ← | left arrow | 0/7/8 |
These may not all display as intended in your browser.
The names are what they were called, not what anyone (least of all you or I) calls them today.
The ICL 1900 Series Internal Machine Code
The code (excluding shift characters) is shown in 6-bit octal form. ICL 1900 mainframes had a 24-bit, four character, word.
| Symbol | Code | Symbol | Code | Symbol | Code | Symbol | Code | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | #00 | space | #20 | @ | #40 | P | #60 | ||||
| 1 | #01 | ! | #21 | A | #41 | Q | #61 | ||||
| 2 | #02 | " | #22 | B | #42 | R | #62 | ||||
| 3 | #03 | # | #23 | C | #43 | S | #63 | ||||
| 4 | #04 | £ | #24 | D | #44 | T | #64 | ||||
| 5 | #05 | % | #25 | E | #45 | U | #65 | ||||
| 6 | #06 | & | #26 | F | #46 | V | #66 | ||||
| 7 | #07 | ' | #27 | G | #47 | W | #67 | ||||
| 8 | #10 | ( | #30 | H | #50 | X | #70 | ||||
| 9 | #11 | ) | #31 | I | #51 | Y | #71 | ||||
| : | #12 | * | #32 | J | #52 | Z | #72 | ||||
| ; | #13 | + | #33 | K | #53 | [ | #73 | ||||
| < | #14 | , | #34 | L | #54 | $ | #74 | ||||
| = | #15 | - | #35 | M | #55 | ] | #75 | ||||
| > | #16 | . | #36 | N | #56 | ↑ | #76 | ||||
| ? | #17 | / | #37 | O | #57 | ← | #77 |
In case your font does not support some of these characters: #24 should be a UK Pound Symbol; #76 an upwards arrow; #77 a backwards arrow.