A Level Computer Science Eduqas

Characteristics of contemporary processors, input, output and storage devices

Characteristics of contemporary processors

• Instruction Set Architecture (ISA): Every processor is built around an ISA, which identifies the set of instructions that the processor can carry out.
• Clock speed: The clock speed or clock rate of a processor is a measure of how many calculations it can perform in a given second. It is typically measured in gigahertz (GHz).
• Cache memory: Modern processors usually have a small amount of very fast cache memory directly built into the processor chip, reducing the time it takes to access frequently used data or instructions.
• Core count: Contemporary processors frequently have multiple cores, with each core being able to execute instructions independently of the others.

Input devices

• Keyboard: A keyboard is a common input device that allows text to be entered into a computer system.
• Mouse: A mouse is a device that allows for pointer control in a graphical user interface.
• Touch screen: A touch screen is an input device that allows users to interact directly with what is displayed, rather than using a mouse or a keyboard.
• Microphone: A microphone converts sound into an electric signal for input into a computer system.

Output devices

• Monitor: A monitor is an output device which displays information in visual form, typically using text and graphics.
• Printer: A printer is an output device that produces physical copies of documents, photographs, or other images.
• Speakers: Speakers are output devices that convert electrical signals into sound.

Storage devices

• Hard Disk Drive (HDD): A HDD is a non-volatile storage device containing magnetic disks which rotate rapidly. It is suited for storing large volumes of information.
• Solid State Drive (SSD): A SSD stores data digitally using flash memory, resulting in faster data access and reliability compared to an HDD.
• RAM: Random Access Memory (RAM) is a temporary storage location used to hold data that is currently being used or processed by the CPU.