• Both statements are true; clock speed governs instruction processing speed and cache provides quick access to data.
• The CPU is the "brain" of the computer.
• It carries out all instructions and processes data in computer systems.
• Main Components of CPU:
○ Arithmetic Logic Unit (ALU):
■ Performs arithmetic operations (add, subtract, etc.).
■ Performs logical operations (AND, OR, NOT, comparisons).
○ Control Unit (CU):
■ Directs all the operations in the computer system.
■ Controls and coordinates activities of all other units.
■ Fetches instructions from memory and decodes them.
○ Registers:
■ Small, high-speed storage units inside CPU.
■ Temporarily store data, instructions, or addresses during execution.
■ Examples: Accumulator, Instruction Register, Program Counter.
Study Notes
Category
