An Efficient Implementation of BCD to Seven Segment Decoder using MGDI

Abstract

Now-a-days majority of practical applications such as valet car parking, larger temples necessitate, seven segment displays to give a visual token of the numbers. Digital counters are the one which are used for these applications. The four bit Binary Coded decimal form will normally be the output states of digital counters and thus they are not relevant for straightly activating 7 segment displays. The special BCD to 7 segment display decoder ICs are used in converting the incoming BCD signal to a form convenient for activating these displays. In this paper, an efficient BCD to seven segment converter is designed using Modified Gate Diffusion Input Technique (MGDI). The suggested MGDI based BCD to seven segment converter is contrasted with the conventional Complementary CMOS gates based BCD to seven segment converter. Both the implementations are done by means of Cadence 180 nm technology. Simulation result shows that the MGDI based BCD to seven segment display decoder consumes 51 % less area, 98.97 % power and 98.8 % delay compared with the conventional Complementary CMOS gates based BCD to seven segment display decoder.