- Qdsp 3552 6 6 Vcc 16 6 1 9998 Idadido 6 Pa 6 Gnd Burbo 6 7447 Np Nc No Connection Np No Pin Switch Module 7 Segmen 1 (513.13 KiB) Viewed 36 times
QDSP-3552 6 6 VCC -16_ 6 1 9998 Idadido 6 på 6 GND BURBO 6 7447 np nc - no connection np = no pin Switch Module 7-segment Display Figure 4.1 BCD Decoder/Display Circuit The pins on the 7-segment display are numbered in the same fashion as a DIP; however, not all the pins are present. The label "np" indicates no pin is present at that position. Although the pin is missing, the position of the pin is counted in the numbering scheme. The label "nc" indicates no connection at the pin Construct the circuit shown in Figure 4.1. Derive the truth table of the circuit by observation with D3, D2, D1. DO as the inputs and a, b, c, d, e, f, g as the outputs. When a segment is lit, record a zero for that output (because it is active low). Record a one for a dark segment. Also, sketch the pattern that appears on the display for each input combination (all 16). Leave the circuit intact for Parts 2 and 3. Include the truth table with 7-segment sketches in your report.