A Level Computer Science Eduqas
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Content Overview
18 topics in 5 modules
βοΈ Fundamentals of Computer Science 5 topics
- Characteristics of contemporary processors, input, output and storage devices
- Software and software development
- Exchanging data
- Data types, data structures, and algorithms
- Legal, moral, cultural, and ethical issues
βοΈ Programming and System Development 3 topics
- Elements of computational thinking
- Problem-solving and programming
- Algorithms and data structures
βοΈ Data and Information 3 topics
- The nature of data and information
- Data representation
- Data transformation
βοΈ Computer Systems, Organization, and Architecture 4 topics
- The stored program concept
- Processor fundamentals
- Processing data and information
- Computer networks and the Internet
βοΈ Communication and the Internet 3 topics
- Elements of the Internet
- Communication over networks
- Protocols
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A Level Computer Science Eduqas - Fundamentals of Computer Science - Characteristics of contemporary processors, input, output and storage devices Content Preview
Fundamentals of Computer Science
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.
Question: Explain why adding more CPU cores does not necessarily result in a proportional speed-up for a given task.
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