Commission onInformation and CommunicationsTechnology

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Teacher’s Training on

PC Recycling

Commission onInformation and CommunicationsTechnology

HARDWARE

Commission onInformation and CommunicationsTechnology

Hardware

What is Hardware?

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What is Hardware?

It is the tangible part of a computer system. It simply refers to the equipment and or technology, which is an integral part of the entire system.

Commission onInformation and CommunicationsTechnology

Hardware

Types of Hardware

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Types of Hardware

A computer's hardware devices are categorized as follows:

Motherboard Processor Memory Input and output (I/O) devices Storage devices

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Types of Hardware

Figure 1.2Types of HARDWARE

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• The main circuit board of a microcomputer

• Abbreviated as “mobo”• Contains chips to control

the standard peripheral devices

• These collection of chips are commonly known as chipset

Motherboard

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• Commonly known as “processor”

• It manages all devices and performs the actual processing of data

Central Processing Unit

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• Holds data and program instructions as the CPU works with them

• Consists of chips and is attached to the motherboard

• This type of memory is called RAM

Memory

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• RAM (Random Access Memory)– is volatile, meaning it holds data only

when the computer is on. The data is lost when the computer is powered off

• ROM (Read-only Memory)– is non-volatile, it holds data even when

the computer is ON or OFF

Types of Memory

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The smallest usable unit of measure for memory is the byte – the amount of memory required to hold one character, like the letter A or the numeral 2

• Computers work with larger chunks of data, measured in multiple bytes, as shown below:

How is Memory Measured?

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How is Memory Measured?

UNIT Approximate Value (bytes)

Actual Value (bytes)

Kilobyte (KB) 1,000 1,024

Megabyte (MB) 1,000,000 1,048,576

Gigabyte (GB) 1,000,000,000 1,073,741,824

Terabyte (TB) 1,000,000,000,000 1,099,511,627,776

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THE END