IB Digital Society Topic 3.3A Types of Computers Revision Notes (SL/HL)

IB Digital Society Topic 3.3A Types of Computers Revision Notes (SL/HL) | RevisionDojo

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3.3A Types of Computers

What a Computer Is

A computer is any electronic device that takes in data, processes it by following instructions, and produces output, storing information along the way.
Every computer runs the same four-step cycle: input, process, store, output. A phone taking a photo and a supermarket till both do this, just at different scales.
So many devices fit this definition that computers are sorted into types by capability and intended use.

Embedded Computers

An embedded computer is a small computer built into a larger device to do one specific task (regulating a fridge's temperature, controlling a car's brakes); it cannot run any program you like.
They are the most common computers on Earth and almost all are invisible: cars contain dozens, and washing machines, traffic lights, lifts, and payment terminals all run on them.
1. Their strength is doing one job reliably, cheaply, and at very low power. They cannot be reprogrammed for other tasks the way a general machine can.
When networked, an embedded computer becomes part of the Internet of Things, quietly sending data back to its maker, so an ordinary thermostat can raise real privacy questions.

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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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Duis aute irure dolor in reprehenderit

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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

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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 nisi ut aliquip ex ea commodo consequat.

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.

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3.3A Types of Computers

What a Computer Is

A computer is any electronic device that takes in data, processes it by following instructions, and produces output, storing information along the way.
Every computer runs the same four-step cycle: input, process, store, output. A phone taking a photo and a supermarket till both do this, just at different scales.
So many devices fit this definition that computers are sorted into types by capability and intended use.

Embedded Computers

An embedded computer is a small computer built into a larger device to do one specific task (regulating a fridge's temperature, controlling a car's brakes); it cannot run any program you like.
They are the most common computers on Earth and almost all are invisible: cars contain dozens, and washing machines, traffic lights, lifts, and payment terminals all run on them.
1. Their strength is doing one job reliably, cheaply, and at very low power. They cannot be reprogrammed for other tasks the way a general machine can.
When networked, an embedded computer becomes part of the Internet of Things, quietly sending data back to its maker, so an ordinary thermostat can raise real privacy questions.

Definition

Paywall

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

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

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.

Unlock the rest of this chapter with a free account

End of article

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 3.3A Types of Computers 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

3.3A Types of Computers

What a Computer Is

Embedded Computers

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

3.3A Types of Computers

What a Computer Is

Embedded Computers

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