IBM
1401 Core memory frame
|
|
This is the best piece I have from the early
1960's era.
It's the core memory stack from an IBM 1401 and associated electronics.
It contains 4000 8 bit storage locations. The parity bit is included in
the 8 bits of each location, unlike most other machines. |
|
| Click image above for more |
|
|
Digital
Equipment Corporation minicomputers - PDP-11/05, PDP-11/04 and PDP-11/34
|
|
| I have three DEC PDP-11 minicomputers, all
built in the 1970s. This collection also includes some floppy disk drives,
printers, software and manuals. |
|
| Click image above for more |
|
|
Standard
Modular System (SMS) cards
|
|
| Standard Modular System (SMS) is the packaging
technology developed by IBM in the late 1950's for packaging their
(then) new transistor based electronics. Originally designed during the
Stretch project, they were used in the 14xx, 1620, 704x and 709x series
machines until about 1965 when they were superceded by the Solid Logic
Technology (SLT) used in System/360. |
|
| Click image above for more |
|
|
|
| IBM's quest for the perfect mainframe
power supply |
|
|
|
The
System/360 Power Supply Restoration Project
|
|
| This is one of the many internal power supplies
from an IBM system/360. It was in very poor condition when I first came
upon it, and I thought restoring it to new condition would make an interesting
and satisfying project. It was. |
|
| Click image above for more |
|
|
IBM Machine
badges
|
|
| While wrecking all that IBM gear for the gold,
at least I saved the badges. |
|
| Click image above for more |
|
|
|
|
| 1311 disk storage drives |
| The IBM 2321
Data Cell Drive |
| Evolution
of computer memory |
My
RetroComputing home page
Intabits
home page
