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website/content/museum/sharp-pc-1403-h.md
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6,654 pages: 1,289 machines, 702 software, 460 companies, 64 history, 17 articles, 59 fun.
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
2026-10-12 07:55:22 +02:00

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Markdown

---
title: Sharp PC-1403 (H)
categories:
- Computers
types:
- Pocket
origins:
- Japan
years:
- '1986'
cpus:
- Sharp CMOS SC61860
params:
name: PC-1403 (H)
image: /media/museum/photos/sharp_pc1403h_system_s1.jpg
company: /companies/sharp
company_name: Sharp
specs:
- label: NAME
value: PC-1403 (H)
- label: MANUFACTURER
value: Sharp
- label: TYPE
value: Pocket
- label: ORIGIN
value: Japan
- label: YEAR
value: '1986'
- label: BUILT IN LANGUAGE
value: Sharp BASIC interpreter
- label: KEYBOARD
value: 77 keys, QWERTY calculator type with numeric key-pad and math function keys
- label: CPU
value: Sharp CMOS SC61860 (8 bits)
- label: SPEED
value: 768 kHz
- label: RAM
value: 'PC-1403: 8 KB - PC-1403H: 32 KB'
- label: ROM
value: 72 KB
- label: TEXT MODES
value: 1 line x 24 chars. (LCD screen), 5x7 dot matrix
- label: GRAPHIC MODES
value: None
- label: COLORS
value: Monochrome LCD
- label: SOUND
value: CPU controlled piezo buzzer, fixed frequency and duration via BASIC statement
- label: SIZE / WEIGHT
value: 170 (W) x 72 (D) x 9.5 (H) mm / 150 g (with batteries and hard cover)
- label: I/O PORTS
value: Proprietary 11-pin expansion bus
- label: POWER SUPPLY
value: 6 volts, 2 x CR 2032 lithium cells
- label: PERIPHERALS
value: CE-126P thermal printer and tape interface
tabs:
- photos
- emulators
- links
photos:
- title: LARGE VIEW
subtitle: ''
text: ''
image: /media/museum/photos/sharp_pc1403h_system_s2.jpg
emulators:
- title: POEMS
url: http://sourceforge.jp/projects/poems/
platform: Unix / Linux
text: PC-12xx, 14xx & 13xx emulator
- title: PockEmul
url: http://pockemul.free.fr/
platform: Multiplatform
text: Emulates nearly all Sharp pocket computers!
links:
- title: Web Wiz CAPTCHA
url: http://www.webwizcaptcha.com
text: ''
comments:
- author: wintermute (USA)
date: Wednesday 1st November 2017
text: 'The matrix functions \*can\* be used in BASIC mode, see: http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv017.cgi?read$110792'
- author: Dan Walker (USA)
date: Thursday 2nd June 2016
text: I remember not only did I make a program that foul display Hundreds of Formulas based on a code of input, but I hit the programming from being listed. I wished I remember how I did this, but eventually I did not really use this to cheat as I had intended on my SAT
- author: Jaroslav M. (Slovakia)
date: Tuesday 21st May 2013
text: I wrote my first game using this computer.
- author: Suljo (Bosanac)
date: Monday 18th February 2013
text: |-
I have one , and it is very useful. First my contact with this (PC-1403H) calculator, impress me.\
I have about 17 programs loaded in memory of this machine.
- author: Stephen Page (UK)
date: Wednesday 25th April 2012
text: I will admit to almost cheating in an examination. I was worried I wouldn''t remember some complicated information, so I programmed it into one of these things but by the time I had done all that....I had memorised it and never used the machine in the exam, LOL
- author: Boban (Srbija)
date: Tuesday 6th March 2012
text: Is there any program that I put in a matrix calculator Sharp PC-1403H?
related:
- /museum/sharp-pc-1210-1211-1212
- /museum/sharp-pc-1245
- /museum/sharp-pc-1250-pc-1251
- /museum/sharp-pc-1260-pc-1261-pc-1262
- /museum/sharp-pc-1401-pc-1402-pc-1421
- /museum/sharp-pc-1500-pc-1500a
- /museum/sharp-pc-2500
oc_id: 1173
source:
url: https://web.archive.org/web/20230609154930/http://www.old-computers.com/museum/computer.asp?c=1173
date: '2023-06-09'
---
As the [PC-1401](/museum/sharp-pc-1401-pc-1402-pc-1421/) family was rather successful, Sharp released an update three years later.
The two new models were named **PC-1403** and **PC-1403H**.\
The differences were not large, but very helpful. They had a better display, with 24 instead of 16 characters on the same display area, and lowercase letters could now be used. Thus, there was an additional SML key to switch between uppercase and lowercase entry mode.\
Moreover, matrix calculation functions had been added, such as addition, multiplication, inversion and determinant. They could be used in calculator mode only.
The hardware was based on a later incarnation of the SC61860 CPU, paced at 768 kHz. The RAM had also been expanded, with 8 KB in the PC-1403 (D4364G 8k x 8 static RAM), and generous 32 KB in the PC-1403H (D43256AG 32k x 8 static RAM). The new functions also required a larger ROM (72 KB, LZ92K32 plus SC6976T).
Thanks again to [Roman von Wartburg](http://retrocomputing.ch/) for this information.