IB Digital Society 3.3B Components of a Computer Notes

3.3B Components of a Computer

Hardware and Software

Hardware means the physical parts you can touch. The software is the coded instructions that tell those parts what to do, and a computer needs both to work.

Neither part is any use on its own. Bare hardware just sits there until software gives it instructions, and software has nowhere to run without hardware to carry it out.

Keeping the split in mind helps diagnose faults: a problem is either a hardware fault (a part has failed) or a software fault (the instructions are wrong).

The Processor: The Computer's Brain

The central processing unit (CPU) carries out a program's instructions; often called the computer's brain, it does calculations and makes decisions, with the motherboard connecting it to everything else.

Inside are a control unit (picks the next instruction), an arithmetic-logic unit (does sums and comparisons), and registers (hold current values).

They repeat one endless loop: fetch, decode, execute. How fast and how many loops at once is much of what makes a computer powerful.

Memory and Storage

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Note

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Tip

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Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

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Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

IB Digital Society 3.3B Components of a Computer Notes

IB Digital Society 3.3B Components of a Computer Notes

3.3B Components of a Computer

Hardware and Software

The Processor: The Computer's Brain

Memory and Storage

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

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3.3B Components of a Computer

Hardware and Software

The Processor: The Computer's Brain

Memory and Storage

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

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IB Digital Society 3.3B Components of a Computer Notes

Topic 1 - Introduction - Digital Society1 subtopic

Topic 2 - Concepts - Digital Society7 subtopics

Topic 3 - Content - Digital Society7 subtopics

Topic 4 - Contexts - Digital Society7 subtopics

Topic 5 - Challenges and Interventions - Digital Society (HL)3 subtopics

IB Digital Society 3.3B Components of a Computer Notes

Topic 1 - Introduction - Digital Society1 subtopic

Topic 2 - Concepts - Digital Society7 subtopics

Topic 3 - Content - Digital Society7 subtopics

Topic 4 - Contexts - Digital Society7 subtopics

Topic 5 - Challenges and Interventions - Digital Society (HL)3 subtopics

3.3B Components of a Computer

Hardware and Software

The Processor: The Computer's Brain

Memory and Storage

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

3.3B Components of a Computer

Hardware and Software

The Processor: The Computer's Brain

Memory and Storage

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account