8008-4004=4004 (Eight thousand and eight minus four thousand and four equals 4004)
A data bus is bidirectional because the processor needs it to both read and write. Also, in the case of the 4004, the data bus was tri-multiplexed with the 12 bit address bus and the 8 bit opcode bus.
1,2,4,7,11,13,14,22,26,28,44,52,77,91,143,154,182,286,308,364,572,1001,2002,4004
I believe it was the 4004 by Intel, later the 8008 and then the 8080
4004
ambot
4,084,080.
4004
hello
improved version of 4004
the intel 4004
The Bold and the Beautiful - 1987 1-4004 was released on: USA: 13 March 2003