Digital Electronics Principles & Applications - Encoding, Decoding, and Seven-Segment Displays

These flashcards cover key concepts related to encoding, decoding, and the functionality of electronic displays as discussed in Chapter 6.

BCD

Binary-Coded Decimal; represents decimal digits in binary form with 4 bits.

8421 Code

The most widely used BCD code where each decimal digit is represented by a 4-bit binary number.

Excess-3 Code

An unweighted BCD code that represents decimal digits with a 4-bit binary number, with '3' added to the value.

ASCII Code

American Standard Code for Information Interchange; a character encoding standard for electronic communication.

Unicode

A universal character encoding standard that represents a wide range of characters beyond ASCII.

Gray Code

A binary numeral system where two successive values differ in only one bit, used in error detection.

LED

Light Emitting Diode; a semiconductor device that emits light when current flows through it.

7-Segment Display

An electronic display device that uses seven individual segments to display decimal numerals.

Decoder

A device that translates coded input signals into a specific output format.

Encoder

A device that converts data from one format to another, typically from decimal to binary.

Common Anode Design

A configuration wherein all anodes of the LEDs in a 7-segment display are connected to a positive power supply.

Common Cathode Design

A configuration wherein all cathodes of the LEDs in a 7-segment display are connected to ground.

Liquid Crystal Display (LCD)

A display technology that uses liquid crystals to modulate light for displaying characters and images.

Nibble

A four-bit aggregation used in digital electronics to represent a decimal digit.

Conversion from Hex to BCD

A process that involves converting hexadecimal digits to their decimal equivalents, then encoding these in BCD.

Active LOW Output

A condition where the segments of a display are turned on by a low voltage signal.

Character Encoding Standard

A method of assigning a numerical representation to different characters for digital communication.

Applications of 7-Segment Displays

Used in devices like digital clocks, calculators, and home appliance displays.

Driver IC

Integrated circuit used to control the functions of a display or other electronic components.