Q.Name three functions of the 8051.

The 8051 is a complete computer on a chip, so it can perform several classes of operation; three of its basic functions cover computation, moving data and controlling program flow. …

[!TLDR]

Three functions of the 8051 are arithmetic/logic computation, data transfer (including input/output), and program-flow control with timing.

The 8051 is a true computer on a chip: it contains an ALU, registers A and B, internal ROM and RAM, four I/O ports, two timers, a serial port and interrupt logic, so it can perform a range of functions. Three of its basic functions are:

1. Arithmetic and logical operations — the Arithmetic and Logic Unit (ALU) carries out addition, subtraction, multiplication, division and the bitwise logical operations (AND, OR, XOR, etc.) and makes logical decisions.
2. Data transfer / input–output — using its data transfer instructions and its four programmable I/O ports (and the serial port), the 8051 moves data between its registers, internal and external memory, and the outside world. …