Prototyping Board For Computer Extensions

EE JULY/AUGUST 1988 This printed circuit board is ideal for building and testing experimental ex- tension circuits for a wide range of com- puters. The double-sided, but not through-plated, board has contact fingers that enable it to be accepted in commonly used slot connectors for ex- tension circuits in many types of com- puter, including those in the MSX and IBM PC series. In addition, the board holds 3 general-purpose buffer chips which can be wired to requirement to ensure correct and safe interfacing be- tween the computer and the extension circuit being developed. Supply tracks are provided in the buffer and prototyp- ing area on the board for ease of wiring. When required, a number of contact fingers can be cut off to suit a particular slot width, or to prevent the board being fitted the wrong way around in the slot. Also, the contact fingers are relatively long so that a section of this PCB area can be cut off for use as an adaptor together with a purchased slot connec- t...