Computer Architecture Flashcards
Bus
Connects CPU and Memory. It is a collection id wires that allow data and instructions to move from memory to the central processing unit and back.
Motherboard
a circuit board that devices are physically mounted on
Secondary Storage
stores data persistently
What is the fetch execute cycle ?
CPU fetches the program next instructions from memory
Instructions is found at memory address and stored in binary code
CPU decodes the binary code revealing an instruction which is executed
What is the function of the CPU
The CPU(central processing unit) processes instructions and it consists of the ALU , control unit and register.
What does the ALU do?
The ALU(arithmetic logic unit) receives instructions,data and operates on the data according to the instructions.
What does the contol unit do?
It directs the operations of the CPU
What does the register do?
It’s temporary storage locations that the CPU can access very quickly,when carrying out operations on data. The program counter stores when the CPU is in the program sequence at any one given time.
Factors affecting CPU speed
Clock speed
Number of instructions per second
Cores
What is primary storage?
Stores information for immediate use by the CPU and stores data temporarily
Name two types of primary memory:
1.ROM -Read Only Memory
It is non volatile.
Its contents remains stored whether computer is on or off.
2.RAM-Random Access Memory
It is volatile.
It is temporary.
It is fast.
Name two types of secondary storage
Hard drives-Solid State Disks
Flash drives-Flash Memorys
Input Devices
- Goes into the von Neumann Architecture
- mouse,scanner,keyboard
Output Devices
- Data that comes out if the von Neuman Architecture
- printer,monitor,projector
