IBM 1401 Mainframe Computer |
| The IBM 1401 is a variable-wordlength decimal computer that was announced by IBM on October 5, 1959 October 2023 I purchased a real 1401 control panel ( pictured below ) My plans are to connect it to a Raspberry Pi or a FPGA to emulate the real computer I am creating a virtual IBM 1403 printer so you can re-direct printer output from a emulator like SimH i1401 ( or your own 1401 ! ) Some great links include FPGA 1410/1401 - Curious Marc - Ken Shirriff IBM 1401 3D simulation - IBM 1401 Demo Lab @ CHM  | The Australian Computer Museum Society (ACMS) 2nd of October 2022  |
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PROGRAM CHART IBM 1240 - 1401 - 1420 - 1440 - 1460 IBM 1401 Program Chart ( Hi Res Link )  | February 2026 I managed to purchase another slice of history.
Pictured below is one out of the 16 frames that were stacked together to make 4,000 characters of core memory Core memory explained by Ken Shirriff Fixing Core Memory on a 1401 1 Bit of Core Philips Book on Core A site dedicated to Core Memory Curious Marc Core Memory 
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| Last update 13th Feb 2026 |
| OTHER COOL OLD COMPUTER STUFF ( UNRELATED TO IBM ) ALL MADE IN AUSTRALIA CSIRAC Simuator IMSAI 8080 replica Microbee Technology TEC-1 Z80 Single board Computer |