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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
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---
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
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>