Question

Write short notes on:
(a) Joystick
(c Motherboard
(b) Biometric Sensor
(d) Secondary Memory​

Answer 1

Answer:

1. A joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is controlling. Joysticks are often used to control video games, and usually have one or more push-buttons whose state can also be read by the computer

2.The motherboard is a printed circuit board and foundation of a computer that is the biggest board in a computer chassis. It allocates power and allows communication to and between the CPU, RAM, and all other computer hardware components.

3.Biometric sensors are used to collect measurable biological characteristics (biometric signals) from a human being, which can then be used in conjunction with biometric recognition algorithms to perform automated person identification

4.Secondary memory refers to storage devices, such as hard drives and solid state drives. It may also refer to removable storage media, such as USB flash drives, CDs, and DVDs. ... For example, a computer may have a one terabyte hard drive, but only 16 gigabytes of RAM

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Answer 2

Answer:

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joystick:

joystick is an input device used for playing video games controlling training simulator and robots. It has a vertical stick which can move any direction.

Biometric sensor:

A biometric sensor is a device that identifies unique human physical features with high accuracy.It is an essential component of a biometric system which uses physical features like finger prints,retina,iris patterns etc to identify of the user.

Mother Board:

A mother board is a pcb printed circuit board to which all the major components including the processor are integrated.It contains CPU, additional circuit boards, memory,graphics card, sound card etc.

secondary Memory:

The data in Ram is lost when computer is turned off also primary memory is very expensive and contains less storage space.So, secondary Memory of permanent nature is used.It contains large storage capacity and relatively very cheap.

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