+-------------------------------+ ! APPLE-1 SIMPLE I/O BOARD ! +-------------------------------+ BILL OF MATERIALS: - 1x 74HC154 - 1x 74HC374 - 1x 74LS02 - 1x 74LS244 - 4x 100 nF capacitors - 2x 470 Ohm resistor - 1x LED bargraph MV57164 or equivalent - 2x resistor array (each one contains 4x470 Ohm single resistors, no common pin)