website/content/museum/tandy-radio-shack-trs-80-pc-1.md

title, categories, types, origins, years, cpus, params

title	categories	types	origins	years	cpus	params
Tandy Radio Shack TRS 80 PC-1	Computers	Pocket	U.S.A.	1980	Sharp CMOS SC43177	name company company_name specs tabs photos adverts links docs comments related oc_id source TRS 80 PC-1 /companies/tandy-radio-shack Tandy Radio Shack label value NAME TRS 80 PC-1 label value MANUFACTURER Tandy Radio Shack label value TYPE Pocket label value ORIGIN U.S.A. label value YEAR 1980 label value BUILT IN LANGUAGE BASIC interpreter label value KEYBOARD 57 keys, QWERTY calculator type with numeric key-pad label value CPU Sharp CMOS SC43177 and SC43178 (4 bits) label value SPEED 256 kHz label value RAM 1920 Bytes; 1424 steps / 178 memories available label value ROM 11,2 kB (?) label value TEXT MODES 1 line x 24 chars. (LCD screen) label value GRAPHIC MODES None label value COLORS Monochrome label value SOUND CPU controlled piezo buzzer, 1 tone with fixed frequency and duration label value SIZE / WEIGHT 175 (W) x 70 (D) x 15 (H) mm / 170 g label value I/O PORTS 9 pin expansion port for printer and cassette interface label value POWER SUPPLY 4 x 1,35 V button cell MR44 or similar label value PERIPHERALS 26-3503 cassette interface\ 26-3505 printer / cassette interface (mechanical dot printer)\ CTR-80A cassette recorder (generic) label value PRICE $230 photos adverts links docs title subtitle text image CLOSE-UP null title subtitle text image WITH MANUAL Tandy PC-1 with user manual and soft protective case. null title subtitle text image FRENCH ADVERT (1980) Dated december 1980 null title url text RadioShackCatalogs.com http://www.RadioShackCatalogs.com Here, you can actually/virtually flip-through the pages to view the content of every RadioShack catalog! title url cover text PC-1 - OPERATION MANUAL http://www.trs-80.com/trs80-hw.htm null [**PC-1 - OPERATION MANUAL**](http://www.trs-80.com/trs80-hw.htm)written by Radio Shack  compiled/archived by Wade Fincher\  type of document : PDF\  size : 4 MB\  source : [Ira Goldklang's TRS-80 Revived Site](http://www.trs-80.com) **... READ THE ONLINE VERSION BY CLICKING BELOW :** title url cover text TRS-80 POCKET COMPUTER & CASSETTE INTERFACE - SERVICE MANUAL http://www.trs-80.com/trs80-hw.htm null [**TRS-80 POCKET COMPUTER & CASSETTE INTERFACE - SERVICE MANUAL**](http://www.trs-80.com/trs80-hw.htm)written by Radio Shack  compiled/archived by Pete Bumgardner\  type of document : PDF\  size : 3 MB\  source : [Ira Goldklang's TRS-80 Revived Site](http://www.trs-80.com) **... READ THE ONLINE VERSION BY CLICKING BELOW :** title url cover text PRINTER/CASSETTE INTERFACE FOR TANDY POCKET COMPUTER http://www.trs-80.com/trs80-hw.htm /media/museum/docs/couvs/tandy_pc1_printer-cassette-interface.jpg [**PRINTER/CASSETTE INTERFACE FOR TANDY POCKET COMPUTER**](http://www.trs-80.com/trs80-hw.htm)written by Radio Shack  compiled/archived by Wade Fincher\  type of document : PDF\  size : 495 KB\  source : [Ira Goldklang's TRS-80 Revived Site](http://www.trs-80.com) **... READ THE ONLINE VERSION BY CLICKING BELOW :** author date text Chris Daniels (USA) Wednesday 16th December 2020 It used four MR44 1.35 V Mercury button cells, which are no longer manufactured. The WEINcell MRB675 is a "zinc air" substitute that works well. Several other batteries with the correct voltage will fit, but they are for fundamentally different applications, like hearing aids, and are made to discharge constantly. They will not stop when the device will turn off, and will not last very long. author date text Bill Potter (United States) Monday 17th April 2017 I have a PC-1 and still use it to this day. I have a friend repairing the printer batteries and I will attempt to re-ink the ribbon. I am looking for a digital recorder that will work with the cassette interface. author date text Dave Parker (USA) Monday 2nd April 2012 I have a PC-2 with the printer /cassette interface. The pens in the printer use a water based ink and I seriously doubt that you would be able to find replacements. Your best bet might be to refill the ink pens. I haven''t tried it on mine yet, but inkjet printer ink might work fine. If it''s too saturated, you might want to thin it with distilled water. author date text Questor (USA) Sunday 27th November 2011 @Emily - I am actually going to attempt a repair for the cloudy issue on my PC1 in the next couple of weeks... If you want me to let you know how it goes, send me a PM thru the old-computers.com forums (Username: Questor). Wish me luck! author date text Emily (New Zealand) Sunday 18th July 2010 I have my fathers Radio Shack TRS-80 Pocket Computer. I am getting new batteries for it so I can check that it works. The screen is a little cloudy- any advice on how to fix this? author date text Ronnie Fillers (Greeneville, TN) Wednesday 21st March 2007 where did you find the ink cartridge pens for the sharp computer - #EA-850B for the CE-150 printer? Please advise, because I have not been able to find them. author date text Rob Sobkoviak (Earth) Wednesday 21st February 2007 I have one of these computers--got it when I was about 12 years old....it was an "upgrade" to my TI-55 scientific calculator. I was the toast of the 7th grade until a few of my friends ended up spending thousands on the Apple ][+ :) author date text Jeff (USA) Saturday 4th October 2003 I still have mine.. although I have tried to replace the batteries, but it still fails to operate. Mine, however, is the Sharp version of the TRS. I have the notebook adapter that includes a thermal printer, minicassette data drive, and a nice little case. I also have several programs that run electrical calculations and statistical data. The earliest PDA? /museum/tandy-radio-shack-trs-80-pc-2 /museum/tandy-radio-shack-trs-80-pc-4 937 url date https://web.archive.org/web/20230403061028/http://www.old-computers.com/museum/computer.asp?c=937 2023-04-03

The "TRS-80 Pocket Computer" was the first pocket computer Tandy/Radio Shack distributed. Nowadays, it is often referred to as the TRS-80 PC-1, so as to differentiate it from its successor, the TRS-80 PC-2 (and following), which is a clone of the Sharp PC-1500.

The TRS-80 Pocket Computer was custom manufactured by Sharp Corporation, and is technically identical with the Sharp PC-1211 (see there for more technical information). There were some minor differences: The colour style was a bit different, with gray and black prevailing instead of brown, and of course with a Radio Shack type label; moreover, the computer came with a soft (instead of hard) protective case, and an additional Quick Reference Card.

The peripherals were - of course - the same as for the Sharp models: The cassette interface unit (Catalog Number 26-3503), and the printer and cassette interface (26-3505 ), which incorporated a single needle mechanical dot printer.

Special thanks to Roman von Wartburg and his site for information and picture.