Full content from the completed page crawl (media download still running)

6,654 pages: 1,289 machines, 702 software, 460 companies, 64 history, 17 articles, 59 fun.
4,336 media files so far; references to files not downloaded yet are left out.

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

content/museum/sharp-pc-1250-pc-1251.md

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+---
+title: Sharp PC-1250 PC-1251
+categories:
+- Computers
+types:
+- Pocket
+origins:
+- Japan
+years:
+- '1982'
+cpus:
+- CMOS SC61860
+params:
+  name: PC-1250 PC-1251
+  image: /media/museum/photos/sharp_pc1251_system_s1.jpg
+  company: /companies/sharp
+  company_name: Sharp
+  specs:
+  - label: NAME
+    value: PC-1250 PC-1251
+  - label: MANUFACTURER
+    value: Sharp
+  - label: TYPE
+    value: Pocket
+  - label: ORIGIN
+    value: Japan
+  - label: YEAR
+    value: '1982'
+  - label: BUILT IN LANGUAGE
+    value: BASIC interpreter
+  - label: KEYBOARD
+    value: 52 keys, QWERTY calculator type with numeric key-pad
+  - label: CPU
+    value: CMOS SC61860 (8 bits)
+  - label: SPEED
+    value: 576 kHz
+  - label: RAM
+    value: 4 KB
+  - label: ROM
+    value: 24 KB
+  - label: TEXT MODES
+    value: 1 line x 24 char. 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: 135 (W) x 70 (D) x 9.5 (H) mm / 115 g (with batteries)
+  - 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\
+      CE-124 Tape recorder interface\
+      CE-125 Thermal printer and micro cassette recorder
+  - label: PRICE
+    value: About 340 (Germany, 09.1982)
+  tabs:
+  - photos
+  - emulators
+  - links
+  - docs
+  photos:
+  - title: LARGE VIEW
+    subtitle: ''
+    text: ''
+    image: /media/museum/photos/sharp_pc1251_system_s2.jpg
+  - title: FRONT VIEW
+    subtitle: ''
+    text: ''
+    image: /media/museum/photos/sharp_pc1251_frontview_s1.jpg
+  - title: BOTH SIDES
+    subtitle: ''
+    text: Note the contrast adjustment button on the right side and the 11-pin expansion connector (covered by a plastic lid) on the left side.
+    image: /media/museum/photos/sharp_pc1251_sides_s1.jpg
+  - title: BACK SIDE
+    subtitle: ''
+    text: ''
+    image: /media/museum/photos/sharp_pc1251_back%20side_s1.jpg
+  - title: IN ITS PLASTIC CASE
+    subtitle: ''
+    text: ''
+    image: /media/museum/photos/sharp_pc1251_incase_s1.jpg
+  - title: COMPLETE SYSTEM
+    subtitle: ''
+    text: Complete system in its carrying case, with the CE-126P - printer and cassette interface. The small housing alowed to carry the AC adaptor, spare cassettes tapes and paper rolls.
+    image: /media/museum/photos/sharp_pc1251_compsystem_s1.jpg
+  - title: THE ELECTRONICS
+    subtitle: ''
+    text: |-
+      The components side of the main card actually faces the plastic part and memory card.
+
+      **(1)** Reset switch\
+      **(2)** Battery cell connectors\
+      **(3)** LCD contrast button\
+      **(4)** SC43536 display driver\
+      **(5)** 11-pin expansion connector\
+      **(6)** SC61860 CPU\
+      **(7)** Piezzo buzzer\
+      **(8)** Memory card connector
+
+      Memory card:\
+      **(9)** Toshiba TC5517 2Kx8-bit RAM chips (HM6116 equivalent)\
+      **(10)** LH532916 24 KB ROM chip. Holds the BASIC interpreter.
+    image: /media/museum/photos/sharp_pc1251_inside_s1.jpg
+  - title: PC 1253
+    subtitle: ''
+    text: |-
+      The PC 1253 was an OEM version of the PC 1251. It had a reduced keyboard and ran a pre-installed program. This French model was used to draw up estimates in the building trade.
+
+      A PC-1252 (similar desing but 2 KB of RAM) was also released.
+    image: /media/museum/photos/sharp_pc1253_system_s1.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: ''
+  docs:
+  - title: SHARP PC-1251 - INSTRUCTION MANUAL
+    url: http://www.usersmanualguide.com/sharp/calculator/pc-1251
+    cover: /media/museum/docs/couvs/sharp-1251_user-manual.jpg
+    text: |-
+      [**SHARP PC-1251 - INSTRUCTION MANUAL**](http://www.usersmanualguide.com/sharp/calculator/pc-1251)written by Sharp
+
+       type of document : PDF\
+       size : 3.65 MB\
+       source : [UsersManualGuide.com](http://usersmanualguide.com)
+  - title: SHARP PC-1250/CE-125 APPLICATION SOFTWARE PROGRAM EXAMPLES
+    url: null
+    cover: /media/museum/docs/couvs/pc1250ap.jpg
+    text: |-
+      **SHARP PC-1250/CE-125 APPLICATION SOFTWARE PROGRAM EXAMPLES**\
+      written by Sharp
+
+       compiled/archived by James L. Dunlap, Jr\
+       type of document : PDF\
+       size : 1,8 MB
+
+      **... READ THE ONLINE VERSION BY CLICKING BELOW :**
+  comments:
+  - author: Will (UK / Canada)
+    date: Monday 23rd April 2012
+    text: Selling my PC 1251 on ebay
+  related:
+  - /museum/sharp-pc-1210-1211-1212
+  - /museum/sharp-pc-1245
+  - /museum/sharp-pc-1260-pc-1261-pc-1262
+  - /museum/sharp-pc-1401-pc-1402-pc-1421
+  - /museum/sharp-pc-1403-h
+  - /museum/sharp-pc-1500-pc-1500a
+  - /museum/sharp-pc-2500
+  oc_id: 1091
+  source:
+    url: https://web.archive.org/web/20230608151812/http://www.old-computers.com/museum/computer.asp?c=1091
+    date: '2023-06-08'
+---
+
+With the PC-1251, Sharp started off their product range of really tiny pocket computers. It was the third original design after the [PC-121x](/museum/sharp-pc-1210-1211-1212/) and [PC-1500](/museum/sharp-pc-1500-pc-1500a/) series.
+
+Contrary to its predecessors, it was really pocket sized, measuring only 135 x 70 x 9.5 mm. Nevertheless, it featured a 24 character display, and with 4 KB RAM it even outclassed the PC-1500 basic version. The major drawback of the new design was that the tiny keys are only compatible with pointed fingers.
+
+The PC-1251 was based on a new 8-bit CMOS micro processor, the SC61860, which was mounted on the main PCB together with the display driver chip SC43536. On an additional small PCB, 24 KB ROM (LH532917) and 4 KB RAM (two HM6116 2k x 8 chips) were located. A new feature was the so-called "reserve memory" which allowed to assign often used BASIC commands or functions to 18 of the alphanumeric keys.
+
+Together with the PC-1251, the CE-125 thermal printer and micro cassette recorder unit was introduced. With integrated NiCd accumulators, it was fully mains independent and made the 1251 into a very compact mobile computing system. The CE-125 also featured an additional tape interface for external tape recorders.
+
+The PC-1250 was the same machine as the PC-1251 but with only 2 KB of RAM.
+
+Thanks to **Roman von Wartburg** and his [site](http://retrocomputing.ch/) for information and picture.