Fingerprint scanner :
Fingerprint Scanners is a fingerprint recognition device used for computer security equipped with the fingerprint recognition module feature that uses biometric technology. Fingerprint Reader/Scanner is very safe and convenient device for security instead of password, that is vulnerable to fraud and is hard to remember.

Nano-technology is an engineering, science, and technology that develops machines or works with one atom or one molecule that is 100 nanometers or smaller.

Monitor:
(i) Monitor is the most commonly used output device to display the information. It looks like a TV.
(ii) Pictures on a monitor are formed with picture elements called PIXELS.
(iii) Monitors may either be Monochrome which display text or images in Black and White or can be color, which display results in multiple colors.
(iv) There are many types of monitors available such as CRT (Cathode Ray Tube), LCD (Liquid Crystal Display) and LED (Light Emitting Diodes).
(v) The video graphics card helps the keyboard to communicate with the screen.
(vi) It acts as an interface between the computer and display monitor.

(i) Parallel and Distributed computing
(ii) Computers have become smarter, faster and smaller
(iii) Development of robotics
(iv) Natural Language Processing
(v) Development of Voice Recognition Software

Impact printers:
(i) These printers print with striking of hammers or pins on ribbon. These printers can print multi-part (using carbon papers) by using mechanical pressure. For example, Dot Matrix printers and Line matrix printers are impact printers.
(ii) A Dot matrix printer that prints using a fixed number of pins or wires.
(iii) Line matrix printers use a fixed print head for printing.

(i) Monitor
(ii) Printer
(iii) Plotter
(iv) Speaker
(v) Multimedia projectors are the output devices.

Input device is used to feed any form of data to the computer, which can be stored in the memory unit for further processing.
Example: Keyboard, mouse, Scanner, Fingerprint scanner, Track Ball, Retinal Scanner, Light pen etc.

The various applications of computers are,
(i) Business
(ii) Education
(iii) Marketing
(iv) Banking
(v) Insurance
(vi) Communication
(vii) Health care
(viii) Engineering - Robotics, Nano technology, Bio Engineering

(i) Computer is the powerful machine.
(ii) It can perform large number of tasks
(iii) The main capacities of computer are work length, speed accuracy, diligence, versatility memory and automation and lots of more tasks.