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Unformatted text preview: Draw a PLC ladder logic diagram for this task. 2. The program below contains right to left logic. Redraw the program corrected so that all logic reads from left to right . Which of the following is not an ALU function? a. Add b. Shift left c. Power-up sequence d. Complement The ALU has two inputs. In the microprocessor used in this chapter they are connected to the a. Program counter c. Control logic b. Internal data bus d. Memory address register The memory address register is connected to the microprocessor’s internal data bus so that it can be loaded from a. The program counter b. The general-purpose register c. Memory d. All of the above The memory address register’s outputs drive the microprocessor’s a. Accumulator b. Internal data bus c. Memory address bus d. Instruction decoder input...
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- Spring '11