Own a piece of 99% new condition early-1980s retro computing history!Free shipping! Already packed (see photo)
I have been collecting these pocket computers for a while and this set is by far the best overall and all tested working! The original owner must have not used it much at all! Please look at the photos and videos.
This is a Sharp pocket computer PC-1500A from early 1980s, with a CE-150 printer and cassette interface dock, a CE-161 16KB RAM (in PC-1500A), protective case, leather pouch, two spare rolls of paper, cassette interface cables, a tube with all the color caps for plotter pens, etc.
In the United States, Radio Shack rebranded this Japanese computing marvel into TRS-80 PC-2, which is functionally identical to PC-1500, the earlier version of 1500A that only had 2KB internal RAM. 1500A has 8KB internal RAM.
This computer rivaled desktop computers of its ago with both speed and functionality.
The unit can be used as a super scientific calculator even by today's standard. It has 12-digit precision and comes with all scientific functions such as sin, log, etc. You can also write BASIC and assembly language programs for a lot of fun activities or professional programs. There are many programs and games for it and even an emulator or two.Search SHARP PC-1500 and you can find a lot of resources about this unit.
Specifications:
- LH5801 processor operating at 1.3MHz
- 26-character LCD display, can be used as a 156*7 pixel display 65-key QWERTY keyboard speaker for generating tones real time clock
- 16K ROM BASIC, known as “Extended Pocket BASIC” 8KB RAM for slightly over 6K for BASIC programs Including a CE-161 16KB RAM module for 16KB additional RAM for BASIC programs
- 60-pin Input/Output Interface Connector for connecting peripherals such as the included printer and cassette interface dock plug-in slot for memory expansion, with a 16K module installed.
Accessories included:
- Mint! Case of the printer dock
- Mint! Leather pouch for the main unit
- Mint! The dock shows no signs of battery corrosion on the outside. See photo. Most docks are corroded on the outside (main unit battery leak) and inside (dock rechargeable battery leak).
- Mint! 16KB RAM and clear case (no case top cover)
- Mint! Audio cables (don't believe they were ever used)
- Mint! Two extra rolls of printer paper (a partial roll in the printer)
- Mint! 4 color pen caps in a clear tube
- Mint! Japanese instruction slips
Here's what works:
- The short video demonstrates the main unit, the very long BASIC program I loaded from cassette interface, printer moves etc.
- The main unit looks like new, works like new. I cleaned the inside of the unit and found no rusts. LCD display is flawless. Not a single scratch!
- All keys on the keyboard look and work flawlessly!
- The speaker works. It makes "modem noise" when loading and saving programs with the cassette interface.
- The real time clock works to keep time.
- 8KB internal RAM combined with a CE-161 16KB RAM module gives you almost 24KB storage for BASIC programs.
- 60-pin Input/Output Interface Connector works.
- The printer works, print head rotates, moves, paper feed works, LPRINT command prints (the pen is dry so it made some faint black marks, see paper roll on the dock disassembly photo). All 4 color pens are included for authenticity. plug-in slot for memory expansion works and a 16K module is installed with a cover that covers the hole. Cassette interface also works. I managed to load a very long BASIC program that took almost 11 minutes.
- Loading programs through this interface does take a lot of effort to get working (fair warning).
- The main unit battery compartment has no sign of corrosion or oxidation. See photos.
- Audio cables are included. I don't think they were ever used. I used another set of cables for loading the program.
- A clear case of the RAM module is included but the top cover of the RAM case is missing.
Here's what doesn't work:
- The 9-V center-NEGATIVE AC adapter is NOT INCLUDED!
- The internal Ni-Cad battery in the CE-150 dock is long dead after 4 decades.
- I removed it and cleaned the inside of the dock. You must use a 9-V center-NEGATIVE adapter to power the dock.
- It's a well-known design issue that the adapter alone can't power the printer and an internal battery pack was required. I powered both the adapter barrel and internal battery to be able to print. Without a rebuilt internal battery pack, it may not print or properly move.
- Even though there is very little sign of corrosion, see photo, the battery contacts were somewhat corroded so I ran a red wire to bypass the positive contact's PCB trace (the trace is still connected but a bit worn). You need some moderate skills to first remove the existing battery wires, and then replace with a new battery pack you make and charge it up.
- The included 16KB RAM module had a lithium battery that is long dead after 4 decades (rated for 2-5 years) and I carefully removed it and restored the module without the battery.
- This means if you remove the module, the stored program will not be retained.
- To replace battery without losing the program, plug in an AC adapter.
