The 10 descimal digits can be displayed on a seven-segment display as follows:īCD to 7-Segment Display: Truth Tables & Karnaugh Maps Each segment is identified using a letter between A to G as follows: Each segment can be turned on or off to create a unique pattern/combination. Typically 7-segment displays consist of seven individual coloured LED’s (called the segments). For example, the decimal number 365 is encoded as:Ī lot of electronic devices use 7-segment displays (Watch, alarm clock, calculator etc.). Numbers larger than 9, having two or more digits in the decimal system, are expressed one digit at a time using on nibble per digit. In computing and electronic systems, binary-coded decimal (BCD) is used to encode decimal numbers (base-10 numbers) in a binary form where each decimal digit is represented by a nibble (4 bits).įor instance decimal number 5 is represented as 0101 in BCD as 5 = 4 + 1 8
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