7 Segment Display Interface with 8051 Microcontroller

Pubblicato il: 20 dicembre 2020
sul canale di: Electric Shocks

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7 segment LED display is trendy, and it can display digits from 0 to 9 and quite a few characters like A, b, C, ., H, E, e, F, n, o,t,u,y, etc. Knowledge about how to interface a seven-segment display to a microcontroller is very essential in designing embedded systems. A seven-segment display consists of seven LEDs arranged in the form of a squarish ‘8’ slightly inclined to the right and a single LED as the dot character. Different characters can be displayed by selectively glowing the required LED segments. Seven segment displays are of two types, common cathode, and common anode. In common cathode type, the cathode of all LEDs are tied together to a single terminal which is usually labeled as ‘com‘ and the anode of all LEDs are left alone as individual pins labeled as a, b, c, d, e, f, g & h (or dot). In common anode type, the anode of all LEDs is tied together as a single terminal, and cathodes are left alone as individual pins.

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