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CPU: MOS Technology 6507 @ 1.19 MHz
Audio+video processor: TIA. 160 x ~192 pixel, 128 colors (121 of them actually different from each other on NTSC, 114 on PAL), 2 channel mono sound.
RAM: 128 bytes (plus up to 256 bytes built into the game cartridges)
ROM (game cartridges): 4 KB maximum capacity (32 KB+ with paging)
Output: B/W or color TV picture and sound signal