---
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
  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