Answer to Question #202821 in Software Engineering for Muhammad

Question

1. In a common cathode 7 segment LED, what should be the BCD code to display the digit ‘5’?

2. Explain the advantages of using Twisted Nematic (TN) phase of Liquid Cristal for LCD Display.

3. Mention the steps of the data communication between to Data terminal Equipment using RS232 Standard.

Answer 1

1. To activate the LED segments on this common anode display, a LOW condition (switch to ground) is required. But let's say we want the decimal number "4" to light up on display. Then switches b, c, f, and g would be closed, illuminating the respective LED segments.
2. Another significant benefit of twisted nematic LCD is that it has the fastest pixel response rate and greatest refresh rate compared to other display technologies, notably IPS LCD and, to a lesser extent, OLED display. Because of these properties, TNs are popular among gamers.
3. Step 1: Learn about the RS232 connection and signals. The Electronic Industries Association established the RS-232C, EIA RS-232, and simply RS- 232 serial communication standards in 1969. Step 2: Educate yourself on the Protocol A protocol is a collection of hardware and software rules that all communication parties agree upon to exchange data accurately and effectively. Step 3: Use 232Analyzer to control your RS232 devices. 232Analyzer is a serial port protocol analyzer that enables you to control, debug, monitor, and sniff serial devices (RS-232, RS-485, RS-422, and TTL) from your PC. The FREE version of 232Analyzer has several limitations but is more than adequate to test and operate your serial devices.