website/content/museum/panasonic-jd-series.md

---
title: Panasonic JD series
categories:
- Computers
types:
- Professional Computer
origins:
- Japan
years:
- '1981'
cpus:
- Intel 8085A
params:
  name: JD series
  image: /media/museum/photos/panasonic_jd800u_1s.jpg
  company: /companies/panasonic
  company_name: Panasonic
  specs:
  - label: NAME
    value: JD series
  - label: MANUFACTURER
    value: Panasonic
  - label: TYPE
    value: Professional Computer
  - label: ORIGIN
    value: Japan
  - label: YEAR
    value: ? 1981
  - label: BUILT IN LANGUAGE
    value: CP/M, Microsoft Basic, MicroCobol and Assembler delivered on disks
  - label: KEYBOARD
    value: full stroke keyboard, 94 keys, 21 function keys, numeric keypad and arrow keys
  - label: CPU
    value: Intel 8085A
  - label: SPEED
    value: 2 MHz
  - label: RAM
    value: |-
      JD-700U: 32 KB (56 KB max.)\
      JD-800U, 840U, 740U : 56 KB\
      JD-800M, 740M : 60 KB\
      JD-850M: 64 KB
  - label: ROM
    value: 2 KB (+ 2KB optional)
  - label: TEXT MODES
    value: 80 x 24
  - label: GRAPHIC MODES
    value: None
  - label: COLORS
    value: None, built-in 12'' green phosphor monitor
  - label: SOUND
    value: buzzer
  - label: SIZE / WEIGHT
    value: 540 x 390 x 630 mm / 50 Kg
  - label: I/O PORTS
    value: 3 x RS232c connectors
  - label: BUILT IN MEDIA
    value: two 8'' or 5.25'' floppy disc drives, depending on models
  - label: OS
    value: CP/M 2.2
  - label: POWER SUPPLY
    value: PSU built-in
  - label: PERIPHERALS
    value: 8.4 MB hard disk, GP-IB (IEEE-488) interface, cartridge tape
  - label: PRICE
    value: Unknown
  tabs:
  - photos
  - adverts
  - hardware
  forum_thread: 1238
  photos:
  - title: JD-800U
    subtitle: ''
    text: Thanks to Juraj Mucko for this picture
    image: /media/museum/photos/panasonic_jd800u_1m.jpg
  - title: JD-800U - FRONT
    subtitle: ''
    text: Thanks to Juraj Mucko for this picture
    image: /media/museum/photos/panasonic_jd800u_front_m.jpg
  - title: JD-740M
    subtitle: ''
    text: Thanks to Juraj Mucko for this picture
    image: /media/museum/photos/panasonic_jd740m_1.jpg
  - title: JD-800M
    subtitle: ''
    text: Thanks to Juraj Mucko for this picture
    image: /media/museum/photos/panasonic_jd800m_1.jpg
  - title: JD-850M
    subtitle: ''
    text: Thanks to Juraj Mucko for this picture
    image: /media/museum/photos/panasonic_jd850m_1.jpg
  - title: BOOT SCREEN
    subtitle: ''
    text: |-
      This model is using CP/M 2.2 from Digital Research and Microsoft Basic 5.0 (CP/M version).

      Thanks to Juraj Mucko for this picture
    image: /media/museum/photos/panasonic_jd800u_ss_m.jpg
  - title: BASIC PROGRAM
    subtitle: ''
    text: Thanks to Juraj Mucko for this picture
    image: /media/museum/photos/panasonic_jd800u_ss2_m.jpg
  adverts:
  - title: ADVERT
    subtitle: ''
    text: Thanks to Juraj Mucko for this picture
    image: /media/museum/pubs/panasonic_jd800u_pub_1m.jpg
  - title: COMPARISON CHART
    subtitle: ''
    text: |-
      This document compares the different Panasonic systems of the serie

      Thanks to Juraj Mucko for this picture
    image: /media/museum/pubs/panasonic_jd800u_comparison-chart.jpg
  - title: 'COMPARISON CHART #2'
    subtitle: ''
    text: Thanks to Juraj Mucko for this picture
    image: /media/museum/pubs/panasonic_jd_comp-chart_2.jpg
  - title: M-SERIES BROCHURE - COVER
    subtitle: ''
    text: Thanks to Juraj Mucko for this picture
    image: /media/museum/pubs/panasonic_jd_flyer_1.jpg
  - title: M-SERIES BROCHURE - PAGE 1-2
    subtitle: ''
    text: Thanks to Juraj Mucko for this picture
    image: /media/museum/pubs/panasonic_jd_flyer_2.jpg
  - title: M-SERIES BROCHURE - PAGE 3
    subtitle: ''
    text: Thanks to Juraj Mucko for this picture
    image: /media/museum/pubs/panasonic_jd_flyer_3.jpg
  - title: M-SERIES BROCHURE - PAGE 4
    subtitle: ''
    text: Thanks to Juraj Mucko for this picture
    image: /media/museum/pubs/panasonic_jd_flyer_4.jpg
  - title: M-SERIES BROCHURE - PAGE 5
    subtitle: ''
    text: Thanks to Juraj Mucko for this picture
    image: /media/museum/pubs/panasonic_jd_flyer_5.jpg
  - title: M-SERIES BROCHURE - PAGE 6
    subtitle: ''
    text: Thanks to Juraj Mucko for this picture
    image: /media/museum/pubs/panasonic_jd_flyer_6.jpg
  hardware:
  - title: JK-7600
    subtitle: hard disk
    text: |-
      8.4 MB external hard disk

      Thanks to Juraj Mucko for this picture
    image: /media/museum/hardware/panasonic_jk7600_1.jpg
  oc_id: 1272
  source:
    url: https://web.archive.org/web/20230608093706/http://www.old-computers.com/museum/computer.asp?c=1272
    date: '2023-06-08'
---

The Panasonic computers from the JD Series are classic CP/M professional systems released at the begining of the 80's.

They are powered by an Intel 8085A processor, offer from 32 KB to 64 KB RAM and are equiped with two 8" or 5.25" floppy disk drives, depending on models. No graphic features here, but 80x24 text resolution on a 12" built-in green phosphor monitor.

The following software were delivered on disk: CP/M 2.2, Microsoft Basic, MicroCobol and Assembler.

Panasonic released several computers in this serie: JD-800U, JD-840U, JD-700U, JD-740U, JD-850M, JD-800M and JD-740M. There were almost the same systems with RAM and/or floppy fisk drive specs differences. See the [comparison charts](/museum/panasonic-jd-series/) for more details.

---

**Contributor:** Juraj Mucko (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>