–0K (8031), ROM 4K (8051), EPROM 4K (8751)
–RAM 128 bytes (8XX1), 256 bytes (8XX2)
(where X= 0 or 7 & X=3 or 5)
–Four 8-bit I/O Ports (P0-P3)
–Two 16-bit Timers/Counters (T0 &T1)
–Serial I/O Port
–Boolean Processor (Operates on Single Bits)
–210 bit-addressable locations
–Oscillator & Clock Circuit