When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Use this board to connect your TRS-80 Model I to the outside world: 32 digital inputs and 32 digital outputs that can be accessed with simple BASIC language commands or from your assembler code. Inputs can be connected to switches, buttons or other digital sensors.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.