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yann64andClaude Opus 5.5 b274874139 All machines linked to their forum thread (full comment import)
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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 17:26:43 +02:00

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---
title: Sharp SM-B-80TC
categories:
- Computers
types:
- Home Computer
origins:
- Japan
years:
- '1977'
cpus:
- Z80
params:
name: SM-B-80TC
image: /media/museum/photos/sharp_sm-b-80t_system_1.jpg
company: /companies/sharp
company_name: Sharp
specs:
- label: NAME
value: SM-B-80TC
- label: MANUFACTURER
value: Sharp
- label: TYPE
value: Home Computer
- label: ORIGIN
value: Japan
- label: YEAR
value: '1977'
- label: BUILT IN LANGUAGE
value: Hexadecimal monitor
- label: KEYBOARD
value: Mechanical 25 keys - Hexadecimal and function keys
- label: CPU
value: Z80 (LH-0080 Sharp version)
- label: SPEED
value: 2.4576 Mhz.
- label: RAM
value: 1 KB static RAM expandable to 3 KB (2114 chips)
- label: ROM
value: 1 KB expandable to 2 KB
- label: TEXT MODES
value: 8 x 7 segment Led display
- label: SIZE / WEIGHT
value: '27 (W) x 19(D) cm. Keyboard: 13.9(W) x 19(D) cm.'
- label: I/O PORTS
value: 100-pin expansion connector, 2 x Z80 PIO interface connectors
- label: BUILT IN MEDIA
value: Cassette interface (1200 bauds)
- label: POWER SUPPLY
value: External 5V / 2A power supply unit
- label: PRICE
value: Unknown
tabs:
- photos
- links
forum_thread: 688
photos:
- title: MOTHERBOARD
subtitle: ''
text: ''
image: /media/museum/photos/sharp_sm-b-80t_motherboard_1.jpg
- title: KEYBOARD - DISPLAY MODULE
subtitle: ''
text: ''
image: /media/museum/photos/sharp_sm-b-80t_displayunit_1.jpg
- title: DISPLAY CLOSE-UP
subtitle: ''
text: Data's were displayed as 16-bit, 4-digit hexadecimal values.
image: /media/museum/photos/sharp_sm-b-80t_display_1.jpg
- title: THE BOX
subtitle: ''
text: |-
Japanese box.\
It seems that the system was never sold outside Japan.
image: /media/museum/photos/sharp_sm-b-80t_box_1.jpg
links:
- title: Web Wiz CAPTCHA
url: http://www.webwizcaptcha.com
text: ''
related:
- /museum/sharp-mz-40k
- /museum/sharp-sm-b-80te
oc_id: 705
source:
url: https://web.archive.org/web/20230608080941/http://www.old-computers.com/museum/computer.asp?c=705
date: '2023-06-08'
---
In 1978, the Sharp parts division, in charge of semiconductor sales, became one of the first second source distributor of **Zilog CIE**. In order to promote the LH-0080 (Sharp Z80) and associated chips, the division thought up and sold two training cards based on the LH-0080 processor and the LH-0081 PIO chip. These two cards were the [SM-B-80TE](/museum/sharp-sm-b-80te/) and the **SM-B-80TC**.
The major difference between these two models is the keyboard that is here separated from the main board. Still, the keys and display arrangements are exactly the same as the 80TE. It could also be connected to the 80TE system.
Programs entered could be recorded on a cassette tape. A a second I/O connector, managed by a Sharp Z80 PIO allowed the user to connect peripheral devices like a printer. The board could be a part of a larger computer made of several cards mounted onto a backplane due to a second large 100-pin connector (S-100?).
Thanks to **Ohishi Nuboaki** and his Sharp MZ dedicated