Problem 2. Consider a light system that is controlled by an 8-bit register, whic

Question

Problem 2. Consider a light system that is controlled by an 8-bit register, which carries a command to the light system. We call this register Light System Command or LSC. Here are the specifications of this register: . Bit 0-1 control the light intensity: 00 off, 01 low, 10 medium, 11 high. Bit 2-4 control the color: blue 000, green 001, red 010, yellow 011, white 100. Example: If we assign OxC3 to LSC, the light system will interpret it as "It should turn on lamp number # 6 with highest intensity in blue color."

Explanation / Answer

A). Hex Value of LSC - light#0 with Green Color and high intensity

LSC - bit 5-7 controls lamp numbers - Lamp #0 - 000

bit 2-4 controls lamp color - Green - 001

bit 0-1 controls lamp intensity - High - 11

LSC command = 000 001 11 = 0000 0111 (binary) = 0x07 (Hex)

B). Description for LSC = 0xAD

LSC = 0xAD = 1010 1101 (binary) = 101 011 01

bit 5-7 = 101 = lamp#5

bit 2-4 = 011 = lamp color yellow

bit 0-1 = 01 = light intensity low

If LSC = 0xAD the light system will interpret it as "It should turn on lamp number #5 with low intensity in yellow color"

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