The CPU is the primary component that processes the input passed into the computer. It is also called the heart or brain of the computer without the CPU you just have the useless desktop. The CPU has two components Arithmetic Logical Unit (ALU) and Control Unit (CU). ...
Here is the block diagram of a computer system: In the above diagram, both control (control unit or CU) and arithmetic & logic unit (ALU) combinely called as Central Processing Unit (CPU). Let's describe about all the parts as included in the above diagram one by one. The Processor U...
As seen above, the full adder is used to perform the Arithmetic Logic Unit Operations, a necessary part of the computer CPU operations. Without this, we will not be able to perform any complex work that computers are doing today. The full adders are used to program the chips, and these ...
based on the following three characteristics: 1) The computer consists of four main sub-systems: Memory Memory ALU (Arithmetic/Logic Unit) ALU (Arithmetic/Logic Unit) Control Unit Control Unit Input/Output System (I/O)
Arithmetic & Logic Unit (ALU) It performs various arithmetic and logic operations. The data is available in accumulator and temporary/general purpose registers. Arithmetic Operations: Addition, Subtraction, Increment, Decrement etc. Logic Operations: AND, OR, X-OR, Complement etc. Gursharan Singh Tat...
PSW Register PSW (S:8Eh) – Program Status Word Register 7654 CY AC F0 RS1 3 RS0 2 OV 1 F1 0 P Bit Bit Number Mnemonic Description 7 CY Carry Flag Carry out from bit 1 of ALU operands. 6 AC Auxiliary Carry Flag Carry out from bit 1 of addition operands. 5 F0 User Definable ...
Block Diagram XTAL1 XTAL2 ALE PSEN EA RD WR CPU UART RAM 256x8 Flash Boot EE ERAM 64k x 8 loader PROM 2048 2kx8 2kx8 C51 CORE IB-bus PCA Timer2 CAN CONTROLLER Timer 0 Timer 1 INT Ctrl Parallel I/O Ports and Ext. Bus Watch Emul Dog Unit Port 0Port 1 Port 2 Port 3Port 4 ...
2601A–12/01 9 Watchdog Timer (One-time Enabled with Reset-out) Using the WDT WDT During Power-down and Idle UART The WDT is intended as a recovery method in situations where the CPU may be subjected to software upsets. The WDT consists of a 14-bit counter and the Watchdog Timer ...