If you own an Apple IIc, you'd have to add three more Apple IIc's, an Extra Keypad, 30 Block Graphics Sets, Color Sprites, two more voices, four instruments, a Cartridge Port, a Joystick Port and a Commodore 64...
Two-sided poster. The Commodore VIC-20 on one side and Commodore 64 on the other side. The poster shows all kinds of useful information like screen codes, color codes, and Basic commandos.