Tibbo Tibbit Block #00-1 Four Direct I/O Lines

This Tibbit Block #00-1 Four Direct I/O Lines is (basically) four wires that connect its control lines to I/O lines. Complement it with terminal block Tibbit #20 (nine terminal blocks) or #21 (four terminal blocks) and you have four CPU lines "exposed" and ready to be used. Tibbit Block #00-1 Four Direct I/O Lines; Works directly with CPU I/O lines; Has the voltage swing from 0-3.3V; Comes with four yellow LEDs, connected to four control lines