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Clock System & Microprocessor
The system clock reports seconds and microseconds since a start point from the system boot up procedure. Basically the system clock is digital signal emitter, which emits signal composed of high (1) and low (0), because all the machines and their processes understand the language of binary.
The CPU contains a control unit, an arithmetic and logic unit, and registers.
A- Control Unit: The control unit of the central processing unit regulates and integrates the operations of the computer. It selects and retrieves instructions from the main memory in proper sequence and interprets them so as to activate the other functional elements of the system at the appropriate moment
B- Arithmetic Logic Unit: (ALU) is a combinational digital circuit that performs arithmetic and bitwise operations on integer binary numbers
C- Registers are temporary storage locations inside the CPU that hold data and addresses. The register file is the component that contains all the general purpose registers of the microprocessor. A few CPUs also place special registers such as the PC and the status register in the register file.
Registers can be special purpose or general purpose.
D- Accumulator: a general-purpose register that stores a value before and after the execution of an instruction by the ALU
Assembly Langauge
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