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multiplexer to the input of a fifth register, X. Each register is 16 bits long. The
required transfers are dictated by four timing variables, T0 through T3 as follows:
T0 : X←A
T1 : X←B
T2 : X←C
A 12 ohm resistor is connected in parallel with series combinations of resistors of 8 and 16 ohms. If the drop across the 8 ohm resistor os 48 volts, determine the total impressed emf and total current.
Three resistors A,B , and C are connected in series to a 117 volt source . If RA= 64 ohms , and EB = 40 volts when the current is 0.5 amp , calculate the resistors RB and RC
to determine the resistances of the three resistors . A,B, and C the following procedure is followed. Ra and Rb are connected in series and emf 21 volts is impressed for a current of 1 amps, Rb and Rc are next connected in series and emf 27 volts is impressed for the same adjusted current , finally Rc and Ra are connected in series emf of 24 volts is impressed for the same adjusted current . What are the ohmic values of A, B and C?
X=00001111
Y=10101010
Z= 11011011
W=00110011
What will be the 8 bit values of each register after execution of following sequences of
microoperations ?
X ←
xT: R1← R1+ R2
x' T: R1 ← R2
Every time that variable T = 1, either the content of R2 is added to the content of Rl if
x = 1, or the content of R2 is transferred to R1 if x = 0. Draw a diagram showing the
hardware implementation of the two statements. Use block diagrams for the two 4-bit
registers, a 4-bit adder, and a quadruple 2-to-1-llne multiplexer that selects the inputs
to R l . In the diagram, show how the control variables x and T select the inputs of the
multiplexer and the load input of register R1.
A=11110010
B=11111111
C= 10111001
D=11101010
Determine 8 bit values of each register after execution of following sequences of
microoperations
A ←
multiplexer to the input of a fifth register, X. Each register is 16 bits long. The
required transfers are dictated by four timing variables, T0 through T3 as follows:
T0 : X←A
T1 : X←B
T2 : X←C
T3 : X←D
The timing variables are mutually exclusive, which means that only one variable is
equal to 1 at any given time, while the others are equal to 0. Draw a block diagram
showing the hardware implementation of the register transfers. Include the
connections necessary from the four timing variables to the selection inputs of the
multiplexers and to the load input of register X
