Uses of Computers in the Home C E L : C O M P U T E R S i n E V E R Y D A Y L I F E CEL 1 Computers in the Home

Uses of Computers in the HomeUses of Computers in the Home

C E L : C O M P U T E R S i n E V E R Y D A Y L I F E

CEL 1

Computers in the Home



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ObjectivesFor the household appliances and common

devices that are controlled by embedded processors:

1. State their common characteristics/

attributes2. Name these household appliances and

common devices



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• Computers are found in many areas of our life. The type of computer that most

people are familiar with is the desktop computer.

Introduction

A typical desktop computer



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• Not all computers are shaped like a desktop computer. In fact, some

computers do not look like desktop computers at all.

Introduction

A panel computer



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1.1 Household Appliances that are Computers

Characteristics of a Computer



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Is washing machine a computer?



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Characteristics of a Computer

Memory : Stores the amount of time needed for each type of wash

Processing :Controls how much water to use. Controls the movement of the washing drum

Output :Beeping sound when wash is complete

Input :Type of wash required e.g. spin, soak, rinse

Consider the typical washing machine:



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Characteristics of a ComputerConsider the typical washing machine:

• It can be classified as a very simple computer.

• The washing machine runsonly 1 program. It cannot beinstalled with other newprograms.



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• Household appliances that come with embedded processors can be

considered to be very simple computers because the processors have the 4 characteristics of the von-Neumann machine.

4 Characteristics of a computer4 Characteristics of a computer1. It is able to input information.2. It is able to process information.3. It is able to store information.4. It is able to output information.



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Is washing machine a computer?

Yes

4 Characteristics of a computer4 Characteristics of a computer1. It is able to input information – Inputs the type of wash2. It is able to process information. - Controls how much water to

use3. It is able to store information. - Stores the amount of time

needed for each type of wash4. It is able to output information.- Beeps when wash is complete



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Common Household Appliances that Have Embedded Processors

Microwave Oven

LCD TelevisionOven for making bread



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What are the common attributes of their household applicances?

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1. Input, process, output, memory

2. Pocket calculator, digital watch, digital camera, mobile phone

3. They are special-purpose computers because they cannot be installed with other new programs.



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1.2 A Toy that Has an Embedded Processor

When your equipment needs batteries orelectricity to run, it probably has an embedded processor.



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1.2 A Toy that Has an Embedded Processor

Resistor - The little cylinder with manycoloured strips, which controls electric current flow.

Capacitor - The component that iscoloured orange or green. It stores electricity.

Transistor - The black little plasticblock. This amplifies electric current.

Processor - The long piece of blackplastic with many legs. This controls the motion of the car.

Electronic Component - Description



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By looking at its location, color, shape and size



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1.3 Factors Affecting the use of Embedded Processors

1.Cost

2. Complexity

3. Power efficiency

4. Knowledge

5. Imagination

The Human Transporter

A complex processor



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1. A computer is any device that has the ability to input, output, process and store data or information.

2. Many household appliances are operated by embedded processors. These are special-purpose computers because they cannot be used for other jobs. Embedded processors help automate dull repetitive tasks.

Summary



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3. Embedded processors are more widely-used now.

4. A few embedded processors can be found in household appliances.

5. Exploring the internal components of household appliances can be dangerous because there are components that store electricity.

6. High cost, complexity, high power consumption rate and limited knowledge are factors that used to limit the use of embedded processors.

Summary

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Uses of Computers in the Home C E L : C O M P U T E R S i n E V E R Y D A Y L I F E CEL 1 Computers in the Home