Display Essays

Liquid Crystal Display

A thin, flat electronic visual display that uses the light modulating properties of liquid crystals is known as a liquid crystal display. Direct light is not emitted by LCDs. Displaced cathode ray tube (CRT) displays of LCDs are used in most applications. Two sheets of polarizing material, are used in LCD displays, with a liquid crystal solution between them. The crystals align as a result of an electric current, so that light cannot pass through them. Each crystal, therefore, is…

Read >>

Digital Voltmeter Using 8051 Microcontroller

Voltmeter using 8051 microcontroller. Automatic railway gate control 8051 microcontroller use  adminOctober – 4 – 20127 CommentsVoltmeter using 8051. A simple 0-5V voltmeter using 8051 is shown in this article. This digital voltmeter has a sensitivity of 200mV which is a bit low but this project is meant for demonstrating how an ADC and seven segment display can be interfaced to 8051 to obtain a digital readout of the input voltage. A 31/2 digit high end voltmeter will be added soon. ADC0804…

Read >>