Display-Devices-Recorders

Introduction

•The last stage of instrumentation & measurement is display devices & recorders. Because the results of a measurement system are meaningful, they must be displayed for instant observation of for storage for observation at a later stage. The first device is called a “display device” and the second a “recorder”. The data presentation devices may be called as output devices.

Advantage of digital display system

•Faster

•Lighter weight

•Cheap

•Low error probability

•Compatible with other devices

•Adjustable resolution gives better display

•Low power consumption

Our Focus

•Seven segment display

•Liquid crystal display

•Cathode ray tube

•Digital Frequency Meter

•Digital Voltmeter (DVM)

seven-segment display (SSD)

•A seven-segment display (SSD), or seven-segment indicator, is a form of electronic display device for displaying decimal numerals that is an alternative to the more complex dot-matrix displays. Seven-segment displays are widely used in digital clocks, electronic meters, and other electronic devices for displaying numerical information.

•The idea of the seven-segment display is quite old. In 1910, for example, a seven-segment display illuminated by incandescent bulbs was used on a power-plant boiler room signal panel.

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