Hardware Organization is made up of...
a CPU, Memory, and I/O.
an ALU, CU, and Registers.
a chip, board, and RAM.
Check the steps for a typical instruction cycle.
Fetch an instruction
Decode it
Fetch an additional operand if necessary
Compute conditional branches
Execute it
Parse input stream for additional operands
Store the result if necessary
Data representations, or number systems, reflect how the computer system stores and computes its data.