4.22 Using a minimum number of multiplexers, and by manipulating the inputs, draw a schematic that...
PROBLEM STATEMENT The mini-calculator will use a small ALU to perform arithmetic operations on two 4-bit values which are set using switches. The ALU operations described below are implemented with an Adder/Subtractor component. A pushbutton input allows the current arithmetic result to be saved. An upgraded mini-calculator allows the saved value to be used in place of B as one of the operands. The small ALU that you will design will use the 4-bit adder myadder4 to do several possible...
For number 2 you can use exclusive-OR gates, but do not use multiplexers. 1. Design a 4-bit adder/subtractor using only full adders and EXCLUSIVE- OR gates. Do not use any multiplexers. 2. Design a combinational circuit using a minimum number of Full adders, and logic gates which will perform A plus B or minus B (A and B are signed numbers), depending on a mode select input, M. If M=0, addition is carried out; if M1, subtraction is carried out....
Problem 3: (12 points) Using Multiplexers and additional circuitry as needed, design a four bit arithmetic circuit with two selection variables St and So that generates the following arithmetic operations. Draw the logic diagram for two bits of this device Show all the details of your work. Cin0 Cin-1 F A+1 (increment) F A +B+1 F A+B' +1 (subtract) Si So 0 F AB (add) 1 0 FA+ B' F-A -1 (decrement) F A (transfer) Problem 3: (12 points) Using...
3.4.1 Build and simulate the comparator circuit shown in Figure 3, in Multisim. The inputs A3, A2, A1, 40 act as the first 4-bit binary number, and B3, B2, B1, BO act as the second 4-bit binary number. Run your circuit for different setting of the inputs as in Table 3 and observe how the output Xchecks if the numbers are equal or not. Note: connect the eight inputs of this circuit to an 8-input DIP switch as shown in...
The circuit below takes as input a four bit unsigned binary number A A2 A Ao and generates a single output F. Design the circuit where F will only be true if the decimal value of the input mod 3 is equal to 1 (F is true if the input mod 3- 1; F will be false otherwise). To implement F, you may use only the 8 x 1 multiplexor given below. You may not use any additional gates (such...
6. A sequential network has an input A and outputs X and Y. XY represents a 2-bit binary number equal to the number of 0's that have been received as inputs. The network resets when the total number of O's received is 3 or the total number of 1's received is 3 Draw a Moore state graph for the network using JK FFs. Use minimum possible number of states. 6. A sequential network has an input A and outputs X...
3. Using one 74LS08 chip, draw a schematic that will perform the AND function on five inputs. 4. Why did the measured output of procedure 7 occur even though the input was floating? 6. Replace input A for the previous circuit with a 10KHZ TTL square wave input (Figure 3-9). Display the input waveform on Channel 1 of the oscilloscope. Set the B input to LOW (GND), and display the output (Y) waveform on Channel 2. The oscilloscope trigger should...
A seven segment decoder is a digital circuit that displays an input value 0 through 9 as a digital output in the 7-segment display. The behavior of this design can be modeled with the schematic diagram below, where DCBA is the 4-bit input (D is the most significant bit and A is the least significant bit) and abcdefg is the 7-segment output. 2. (20 POINTS) A seven segment decoder is a digital circuit that displays an input value 0 through...
Q2 (20pts) Design a combinational ct that accepts an input 3-bit binary number (XYZ) and generates an output 4-bit binary number (ABCD) where output equal to the double of the input number. (a) Construct the truth table (b) State each output-bit as a function in sum of minterms (SOM) form: (c) State each output-bit as a function in product of maxterms (POM) form: ΠΜ(.) (d) Optimize the circuit using K-maps and find the simplified functions Show your work full-credit. Q3...
Problem 7. Consider the 74x194 4-bit bidirectional universal shift register shown below Determine the operation of this circuit by filling out the table. Assume that the register is cleared initially as indicated by the first row in the table, and then connected to +5V (before time t), as shown in schematic. Also assume that t 'is that time at which a positive edge occurs in the input signal 'clock'. Si and S0 inputs (given) are used to switch between modes...