Excellent condition working SHARP PC-1500A + CH-161 16KB RAM For Sale

Own a piece of great-condition early-1980s retro computing history!
Price is for one but I have 4 in total. This is a Sharp pocket computer PC-1500A from early 1980s, with a CE-161 16KB RAM (in PC-1500A). It\'s carefully packed and ready to ship!
If you pay the asking price, you may pick the unit you want but all 4 units are in excellent condition.
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 at a small fraction of the cost.
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.

Here\'s what works:

• The short video demonstrates the main unit, its total RAM, the BASIC program I wrote to print RAM and serial number.
• The main unit looks very nice, works like new.
• Battery contacts have no rusts.
• LCD display is flawless. No scratch on the cover, no artifacts on the LCD.
• All keys on the keyboard work. Many used units have the \"ENTER\" worn down but this one is in great condition.
• The speaker works. It makes \"modem noise\" when loading and saving programs with the cassette interface (cassette interface not included, just used to test the connector of the main unit).
• 8KB internal RAM combined with a CE-161 16KB RAM module gives you about 22KB storage for BASIC programs.
• 60-pin Input/Output Interface Connector works.
• Loading programs through this interface does take a lot of effort to get working (fair warning).

Here\'s what doesn\'t work:

• The included 16KB RAM module has a lithium battery that is long dead after 4 decades (rated for 2-5 years). You can replace it with a fresh one if you want. Some soldering required for the replacement.
• This means if you remove the module without a fresh replacement battery in the module, the stored program will not be retained.
• To replace battery without losing the program, plug in an AC adapter, (center-negative 9V).
• There may be tiny cosmetic scratches. See photos.

What\'s included:

• The Sharp PC-1500A pocket computer
• CE-161 16KB RAM upgrade module