CPSC 355 Final Exam Review questions and answers, 100% Accurate, rated A+/

CPSC 355 Final Exam Review questions and answers, 100% Accurate, rated A+/ What does a basic computer system consist of - -CPU System Clock Primary and secondary memory Peripheral I/O devices Bus What is the purpose of the CPU - -Controls the transfer of data across the bus and executes instructions CPU's main parts - -Control Unit (CU) Arithmetic Logic Unit (ALU) Registers What is the purpose of a general purpose reg - -to temporarily hold data and addresses What is the PC's purpose - -contains the addresses of the currently executing instruction and increments to execute the next instruction What is the Status reg's purpose (SR) - -contains info (flags) about the results of the previous instruction What is the ALU's purpose? - -Performs arithmetic and logical operations stored in a reg What is the CU's purpose? - -directs the execution of instructions How does the CU do what it's supposed to do - -decodes the opcode to identify the operation What is the system clock's purpose - -Generates a clock signal to synchronize the CPU and other clock devices What is another name for primary memory - -RAM How can you access memory in RAM? - -Must know the address T/F: memory can NOT be written to or read from - -False Primary memory is volatile, what does this mean? - -Data disappears when the computer is powered off What is primary memory's purpose? - -Stores program instructions and data (variables) What is the size of each memory location in RAM