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website/content/museum/texas-instruments-lcm-1001.md
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
2026-10-13 16:47:19 +02:00

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Markdown

---
title: Texas Instruments LCM-1001
categories:
- Computers
types:
- Home Computer
origins:
- U.S.A.
years:
- '1976'
cpus:
- 4-bit SPB0400
params:
name: LCM-1001
image: /media/museum/photos/texas_lcm1001_system_s1.jpg
company: /companies/texas-instruments
company_name: Texas Instruments
specs:
- label: NAME
value: LCM-1001
- label: MANUFACTURER
value: Texas Instruments
- label: TYPE
value: Home Computer
- label: ORIGIN
value: U.S.A.
- label: YEAR
value: '1976'
- label: BUILT IN LANGUAGE
value: None
- label: KEYBOARD
value: Data / address / control switches
- label: CPU
value: 4-bit SPB0400
- label: SPEED
value: Unknown
- label: RAM
value: Unknown
- label: I/O PORTS
value: 40-pin socket
- label: BUILT IN MEDIA
value: None
- label: POWER SUPPLY
value: external AC adaptor or rechargeable battery
- label: PERIPHERALS
value: Expansion modules (?)
- label: PRICE
value: about $280
tabs:
- photos
photos:
- title: CPU CARD
subtitle: ''
text: The empty socket was used to add expansion modules.
image: /media/museum/photos/texas_lcm1001_cpucard_s1.jpg
- title: THE BOX
subtitle: ''
text: ''
image: /media/museum/photos/texas_lcm1001_box_s1.jpg
- title: INSTRUCTION MANUAL
subtitle: ''
text: ''
image: /media/museum/photos/texas_lcm1001_system_s2.jpg
- title: SYSTEM DIAGRAM
subtitle: ''
text: Probably the simpler computer architecture ever seen!
image: /media/museum/photos/texas_lcm1001_diagram_s1.jpg
- title: TI PLATE
subtitle: ''
text: ''
image: /media/museum/photos/texas_lcm1001_plate_s1.jpg
comments:
- author: Denny Mingus
date: Thursday 28th May 2015
text: |-
Attempting to use the add info button on your site, throws a 500 error on POST.\
•Error Type:\
(0x80040211)\
/site/header/action_add_info.asp, line 82
- author: Denny Mingus (USA)
date: Thursday 28th May 2015
text: I''d like to share some photos of the TI LCM modules. I have the 1001, 1002, 1003 and 1004. Please contact me.
- author: A_V_P
date: Sunday 23rd February 2014
text: |-
"Adam Roman (USA, Chicago area)
I have the original 57-page Data Manual from October 1976 for the SBP0400A and SBP0401A 4-Bit-Slice I2L Processor Elements. This is contained in TI''''s December 1977 Bipolar Microcomputer Components Databook. The book also contains the full revised Data Manual for the SN74S481 / SN54S481 / SN74LS481 4-Bit-Slice Schottky Processor Elements. I can scan and post these if anyone needs them."
Very interested datasheet on SBP0400!!! Please, if it is not difficult, to send this datasheet to my email: kolba1958@gmail.com.
- author: A_V_P (Russia)
date: Sunday 23rd February 2014
text: I am the author cited on this website books on all Soviet list IC''s "All domestic circuit." I have a few questions for the forum participants.
- author: Adam Roman (USA, Chicago area)
date: Tuesday 16th April 2013
text: I have the original 57-page Data Manual from October 1976 for the SBP0400A and SBP0401A 4-Bit-Slice I2L Processor Elements. This is contained in TI''s December 1977 Bipolar Microcomputer Components Databook. The book also contains the full revised Data Manual for the SN74S481 / SN54S481 / SN74LS481 4-Bit-Slice Schottky Processor Elements. I can scan and post these if anyone needs them.
- author: jf (france)
date: Thursday 6th March 2008
text: |-
I have the complet LCM-1001, box and manuel.\
This object is used no new.\
What is the price ?\
Thanks
- author: Ivan Assaritti (Indaiatuba - Brazil)
date: Wednesday 22nd June 2005
text: I'm looking for to purchase the "operation manual" and/or circuit diagram from Texas LCM-1001. I tried to find the SPB0400 4bit uP datasheet but I didn't. I intend to make a LCM-1001 emulator on PC. Thank You!
oc_id: 999
source:
url: https://web.archive.org/web/20230227233124/http://www.old-computers.com/museum/computer.asp?c=999
date: '2023-02-27'
---
Almost no information about this 'computer' which was probably the first microprocessor trainer Texas Instruments produced.
The system held two chips, a quad-Nand 74279 logic chip and a 4-bit SPB0400 processor which was the first processor made using the VLSI process technology.
One programmed it through various switchs, results were displayed on LED diodes.
Thanks to **Steve Perry** for information and pictures.
<table> <tr> <td></td> <td>We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.</td> <td></td> </tr> </table>