Explanation

The hard disk was invented on September 13, 1956, by an IBM team led by Rey Johnson

The commercial usage of hard disk drives (HDD) began in 1957

Rey Johnson (considered as “father” of the disk drive).

A computer hard disk drive is a non-volatile data storage device.

Hard Disk is an example of Magnetic Storage

Explanation

Plug and play (PnP) allows a computer to automatically configure new hardware components upon connection.

This simplifies device installation, with resources like USB and IEEE 1394 allocated at boot time.

Explanation

The brain of the computer is the CPU

CPU stands for the central processing unit

The first commercial CPU was invented by Italian Physicist Federico Faggin

The first CPU was the Intel 404 released by Intel in 1971.

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The five basic parts of a computer are:

1. the motherboard
2. central processing unit (CPU)
3. input-output units
4. memory (RAM and ROM)
5.  storage (SSD or HDD)
   

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AGM 07.5.23

Explanation

The ALU (Arithmetic Logic Unit) is a component of the processor that consists of both the Logic Unit (LU) and the Arithmetic Unit (AU).

It performs arithmetic and logical operations essential for processing data.

Explanation

The speed of a laser printer is measured in PPM i.e, Pages Per Minute.

Laser printing is an electrostatic digital printing process.

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Explanation

The CPU is the brain of the computer.

It is responsible for executing instructions, performing calculations, and managing data processing.

It is the most complex and intricate component of a computer.

It consisting of billions of transistors.

It is considered the most challenging to design and manufacture.

Explanation

A standard single-sided, single-layer DVD holds 4.7 GB of data.

A double-layer DVD can store up to 8.5 GB.

A single-layer HD-DVD holds 15 GB of data.

A dual-layer HD-DVD provides up to 30 GB of storage capacity.

Explanation

Silicon is the primary material used in making computer chips.

Due to its excellent semiconductor properties.

They are essential for controlling electrical currents.

Explanation

Hardware refers to the physical components of a computer system, including:

• Motherboard: The main circuit board that connects all hardware components together.
• Hard disk: A storage device that holds data and programs.
• Processor (CPU): The brain of the computer that executes instructions and performs calculations.

In addition to these three, hardware also includes other components such as:

• RAM (Memory)
• Power Supply
• Graphics Card
• Sound Card
• Keyboard
• Mouse
• Monitor
• Case

Explanation

USB, Serial, and Parallel are common computer ports:

• USB is widely used for modern devices like keyboards, printers, and flash drives.
• Serial ports were used for modems and mice but are now mostly replaced by USB.
• Parallel ports were used for printers but have also largely been replaced by USB.