Ict chapter 3 Flashcards
What are the factors that affect the CPU performance?
Clock Speed
Cores
Cache
How does Clock Speed affect CPU performance?
The clock speed is the way we measure the speed of the CPU the faster the clock speed more information can be executed by the CPU per second.
How do Cores affect CPU performance?
The CPU has cores, without these cores the CPU cannot operate also the more the cores the faster an instruction can be executed for example a 2-core CPU is a lot slower than a 8-core CPU
How does Cache affect CPU performance?
The Cache memory is a temporary type of storage inside the CPU which stores data and instructions if the cache memory gets full, the CPU gets slower thus cannot operate fast while empty, the CPU operates as normal
What is a Digital Camera?
A device that allows us to take a pictures by imputing instructions
What is Keyboard?
A device that is used to give instructions to the computer by imputing information
What is a optical mouse?
A type of input device that is used to perform actions and selections on the computer
What is a QR code scanner?
a type of scanner that checks if a QR code is vital for use
Scanner ( 2D-3D )
it is a device that allows the user to scan documents
Touch Screen
A type of screen that can write either as input and output device
What are the three main differences between SSD and HDD?
SSD stands for “solid state drive”
HDD stands for “hard disk drive”
SSD consist of electrical parts while HDD consist of moving mechanical parts
SSD is expensive
HDD is cheap
SSD is available in compact sizes and is relatively fast while HDD is larger and slower
A computer uses the con Neumann model and the stored program concept
Explain what is meant by the stored program concept?
- Program and instructions are stored in the primary memory
- Data is stored in the memory
- Instructions are fetched and executed one after the other
What is the role of the ALU in the fetch-decode-execute process?
- The role of the ALU is to perform mathematical and logical operations when an instruction is set
- The result of these operations is stored in a register called the accumulator temporarily
What does ALU stand for?
Arithmetic logic unit
What does HDD and SSD stand for?
SSD stands for “solid state drive”
HDD stands for “hard disk drive”
What is a microprocessor?
an integrated circuit that is able to perform many of the functions of a CPU
What is a embedded system?
a computer system that performs a dedicated function
What is the architecture of a computer?
the design of a computer system including the components it contains
What is a input device?
a device that allows data to be entered into a computer system
What are 3 examples of input devices?
Keyboard
digital camera
microphone
What is a output device?
a device that is used to obtain the results of data that has been processed
What are 3 examples of output devices?
speaker
laser printer
3D printer
What is RAM?
A component in the CPU that holds data and programs that are currently in use
What is a hard drive?
a storage device that stores data permanently, until it is deleted by the user
what the program counter?
A component in the CPU that stores the address of the next instruction to be processed
What’s the address?
a memory location in RAM
What is the memory address register ?
A component in the CPU that holds the address of the data or instruction to be located in RAM
What is the address bus?
Wires used for the transmission of addresses between components in a computer
What is memory data register?
A component CPU that holds the data or instruction that are fetched from RAM
What is data bus?
wires used for the transmission of data and instruction between components in a computer
What us the current instruction register (CIR)?
a register that is built into the CU that holds current instruction that being processed in the CPU
What is the Control Unit (CU)?
The component in the CPU that controls all the operations in the CPU
What is the decode stage?
thE decode stage of the cycle begins when the instruction is received by the u
What is the instruction set?
a set of commands that can be processed by a certain CPU
What is the arithmetic logic?
the component in the CPU that performs all the mathematical and logical operation required when processing data and instructions
What is a accumulator (ACC)?
a register that is built into the ALU that stores the result of any interm calculations
What is the control bus?
Wires used for the transmission of control signals between components in a computer
