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Learn: Components of Computer Systems
Cambridge Nationals IT Level 1/Level 2
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Welcome!Today we'll explore the components of computer systems. These are the parts that make computers work. Let's dive in and learn how they all fit together!
What is a Computer System?A computer system is made up of hardware and software that work together to process data. The hardware includes physical components, like the CPU and memory, while the software includes programs and applications that tell the computer what to do.
The CPU (Central Processing Unit)The CPU is the brain of the computer. It processes instructions and performs calculations needed to run applications. A faster CPU means the computer can handle more tasks at once or complete tasks more quickly.
Quick check: What is the main role of the CPU in a computer?
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Memory (RAM and ROM)RAM (Random Access Memory) stores data temporarily while it is being used, which makes the computer faster. ROM (Read-Only Memory) contains permanent instructions, like those needed to start the computer. Both are essential for a computer to work properly.
RAM is used to store data {{blank0}}, while ROM stores data {{blank1}}.
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Storage DevicesHard drives and SSDs (Solid State Drives) are used to store data permanently. SSDs are faster and more reliable than traditional hard drives because they have no moving parts. Storage devices keep files, programs, and operating systems even after the computer is turned off.
Match the items on the left with their correct pairs on the right
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Input and Output DevicesInput devices, like keyboards and microphones, allow users to send data to the computer. Output devices, like monitors and printers, allow the computer to send information to the user. Together, they help users interact with the computer system.
Which of the following is an example of an input device?
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Review Time!Great work! You've learned about the key components of a computer system: the CPU, memory, storage devices, and input/output devices. Let's test your understanding with a few questions.
Which of the following are storage devices? (Select all that apply)
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The CPU is often called the {{blank0}} of the computer because it processes instructions.
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Match the items on the left with their correct pairs on the right
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