During the 1980s, many vendors sold small, pocket-sized computers that ran BASIC. Despite their small size and low power consumption, they were relatively capable and could interface with tape storage and thermal printers. The SHARP PC-1500 was a very popular model with a Z80-based CPU. However, its weak point was the small amount of RAM and storage space for programs – only 2k. Some expansion modules are still found for sale from the period, but they are ridiculously expensive. This 16k RAM Module with Battery Backup is a great way to breathe some new life into these old machines!
Not only does this give a huge upgrade to storage space as NVRAM, but it also uses modern memory chips which are very low-power. This means the CR1616 battery should be able to keep the contents of RAM for a long time. This is useful as the machine uses 4xAA batteries. Ideally, using rechargeable AA batteries should be the goal, but you still need to power down the device to swap batteries; this would lead to the memory being wiped without a secondary power source.
Gold-plated contacts ensure a good connection to the expansion port connector. This module is compatible with all SHARP PC-1500 and PC-1500/A models, as well as the TRS-80 PC-2 model rebadged for sale at Radio Shack. Pick one up and supercharge your classic pocket PC while still enjoying the vintage BASIC programming goodness!
