Question: a) (10p) What does the following circuit do? Explain with numeric values. (Note: 74LS373: Octal D Latch, 74LS244: Octal 3-State Buffer) 74LS373 XDO LEDs XOY

a) (10p) What does the following circuit do? Explain with numeric

a) (10p) What does the following circuit do? Explain with numeric values. (Note: 74LS373: Octal D Latch, 74LS244: Octal 3-State Buffer) 74LS373 XDO LEDs XOY ICW 10 GCC A1 B Y1b- A2 74LS244 A3 G1 Switches XDO Syster's XDY buffered data bus AEN Y4b al OC CC A4 A5 AG. AZ AB A9 C2B IOR Explanation: b) (6) According to the given circuitry, indicate the port addresses A, B, C and the control word. 8255 DO D7 IOW WR IOR RD A2 A1 A1 CS A7 Port A: Port B: (1p) (1p) (1p) Port C: Control Word: (3p) 3

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