Bit 7 of port 1 in an 8051 is initially at '0'. We want to toggle...
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Bit 7 of port 1 in an 8051 is initially at '0'. We want to toggle this bit 32 times to create 16 pulses. We write the following code fragment to do this: L1: CLR A INC A CPL P1.7 CJNE A, 32, L2 L2: b) In an 8051, the PSW register contains the following bits: Bit: 7 6 5 4 3 2 1 0 Flag: Cy AC F0 RS1 RSO OV F1 P Assume that initially all these bits are '0' and the following sequence of instructions is executed: MOV A. #69H ADD A, #48H DA A RRC A DA A What will be the values in A and PSW after executing each of the above instruc- tions? (The values should be specified in binary - not as hex or decimal numbers). Bit 7 of port 1 in an 8051 is initially at '0'. We want to toggle this bit 32 times to create 16 pulses. We write the following code fragment to do this: L1: CLR A INC A CPL P1.7 CJNE A, 32, L2 L2: b) In an 8051, the PSW register contains the following bits: Bit: 7 6 5 4 3 2 1 0 Flag: Cy AC F0 RS1 RSO OV F1 P Assume that initially all these bits are '0' and the following sequence of instructions is executed: MOV A. #69H ADD A, #48H DA A RRC A DA A What will be the values in A and PSW after executing each of the above instruc- tions? (The values should be specified in binary - not as hex or decimal numbers).
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Income Tax Fundamentals 2013
ISBN: 9781285586618
31st Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
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