The NEC μPD707 and the NEC μPD708 (μPD707/8) is a 2-chip 4-bit microcontroller developed by NEC in December of 1971, just a month after the Intel 4004. The 4004 served an inspiration for NEC which went on to combine the μPD707 and μPD708 into a single chip which came to be known as the μPD751.
In early 1970 Nippon Coca-Cola Japan set out to increase the efficiency at their sale points by introducing new POS terminals. Sharp was assigned the job of making those terminals - codename BillPet. Sharp ended up commissioning NEC to design the chip. The chips, named μPD707/8, was designed by a small group of five engineers at NEC. The chipset was complete in December of 1971. The chips began full production in March of 1972.
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