Data = values that a program can use.

Ans.2: = A Program is the set of instructions.

Instruction sets are just the opcodes in the CPU that tell it what to do and which software can use. There are hundreds to thousands of these instructions. These instructions vary per processor you use. Here are some of the common instruction sets:

• x86 - started with the Intel 8086 and mostly still available on PCs
• x64 - AMD's new instruction set to expand the x86 instruction set to use 64-bit instructions.
• IA-64 - The instruction set of Intel's Itanium processor, it is declining in popularity as Intel and the software manufacturers have shifted to the x64 instruction set.
• Z80 - This was an 8-bit instruction set used to run the CP/M operating system. The original TRS-80 used it.
• 68000 - The Motorola 68000 was a 16-32 bit CPU.