Question

a) Explain about the 8085-microprocessor system with 4 by 4 keypad interface design. Consider the schematic circuit shown in Figure 1 and actual keypad module in Figure 2. Provide a flow chart for the keypad reading. [2 Marks]

          a) Explain about the 8085-microprocessor system with 4 by 4 keypad interface design.
Consider the schematic circuit shown in Figure 1 and actual keypad module in Figure
2. Provide a flow chart for the keypad reading.
[2 Marks]

Added by Taylor A.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

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Solved by Expert Gio Maya

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Please explain it and provide a flowchart. Explain about the 8085-microprocessor system with a 4-keypad interface design. Consider the schematic circuit shown in Figure 1 and the actual keypad module in Figure 2. Provide a flowchart for the keypad reading. [2 Marks] GHD 813 TS80 PTSa20 PTSCZO PTS320 ROWB S10 814 d# = PCa4 OD aeym FTS320 Kum S15 PTSCZO PTS322 PTSCZ0 PTS320 ROOWE 512 SL6 PTSCZO PTS322 PTSCZ0 PTS320 Pi Figure 1: 4 by 4 keypad schematic circuit