Other Components

R1

Resistor or Potentiometer

Crystal

4MHZ Crystal or 4MHZ ceramic resonator

R2

1k Resistor

C1 C2

22 Pico Ceramic Capacitor

D1-D5

1N4148 Diode

G1

1.5V AAA Battery

Buttons

Left, Right, Down, Up are directional buttons
Enter and Select are single buttons