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A fully 16-bit external data bus 68000-microprocessor is used in the following motor control and instrumentation system. It operates as follows:1. An operator prepares an 8-bit binary value with a dip switch.2. A momentary contact switch (single-pole-single throw) connected to only one end of a cross-coupled NAND latch is activated. This sets the output of the latch to a logic one.3. All this time, the 68000 has been polling the output of the latch.4. When microprocessor detects a logic one at the output of the latch, it resets the latch to a logic zero by sending a low going pulse to the other input leg of the latch.5. The microprocessor then reads the 8-bit data from the dip switch and puts the value in memory starting at location called ‘BUFFER' . This same data is sent to a digital-to-analog converter ( D/A) whose output drives a dc motor.6. The output of the dc motor is connected to a tachometer , whose output is, in turn, connected to an 8-bit microprocessor compatible analog-to-digital converter (A/D). The A/D is connected in a free running configuration.7. The 68000 reads the A/D output, compares it with the original data from the dip switch, sends the hexadecimal number ‘$42' to an 8-bit LED pack if the compared values are different, and sends the hex. value ‘$99' to the same 8-bit LED pack if the compared values are equal.8. Finally, a centronics parallel printer port is polled for a low-true printer ready logic signal, and the A/D data is sent to the printer.A. Provide a hardware design for the system. Partial and simplified decoding is acceptable. Use only the following four addresses for your ports design: $3001 ; $30F1; $30E1; $31F1. Do NOT include interface to memory modules and reset circuits. Design the address decoders, I/O ports (where needed), DTACK circuitry, complete circuit details of dip switch and other switch interconnections, complete circuit details of LED interconnections, input/output ports with appropriate handshaking signals. Clearly label A/D, Printer, D/A signals showing how they connect to other circuits.B. Provide a well-commented 68000 assembly language program to accomplish the tasks indicated in items 1 thru. 8. Clearly identify the specific polling routines and input/output control software for each input/output device.
The response of a LTI system to the input x[n] = (1/4)^n u[n] is y[n]=5(3/4)^n u[n]. A) Find the impluse response h[n] of the system. B) Find the output y[n] for the input x[n] =(1/3)^n u[n].
In a balanced three-phase system, the abc phase sequence source is wye connected and Van=120
Starting from the expression for the MOSFET unity-gain frequency, fT=gm/2*pi*(Cgs+Cgd) and making the approximation that Cgs>>Cgd and that the overlap component of Cgs is negligibly small, show that for an n-channel device fT=3*un*Vov/4*pi*L^2
Design a combinational circuit with five inputs and two outputs. The inputs are D2, D1, D0, and C1 and C0. The circuit calculates the remainder R1 and R0 of the division of the binary number
A dc separately excited generator runs at 1200 rpm. the rated current and voltages are 100 A at 240 V. The armature resistance is 0.15 (ohms). The open circuit magnetization characteristics at 1200 rpm are
Write down the expression for the frequency-dependent open-loop gain of an operational amplifier. Sketch the magnitude of the open-loop gain of an operational amplifier as a function of frequency. Explain what is meant by a `single-lag' response o..
Discuss the various ways to include conditional program flow control in 80x86 assembly programming. What are some limitations implementing this flow control when compared to higher level languages
Explain why a PID controller is not a good idea for this process. Use Matlab to design a PD controller for this process. Repeat the design, but this time use a lead-lag compensation network to cancel the 0.731 time constant and replace it with a 0..
Using the Chebyshev inequality, predict how many samples you'll need to take from an exponential distribution in order to obtain, with a probability of at least .95, an estimate of accurate to one percent.
An engineer is required to survey a nonrectangular plot of land but is unable to measure side UT directly (see Figure 2.11). The following data are taken: RU=121.0m, RS=116.0m, ST=83.5m, angle RST= 113 degrees
a) The input of Hex- to - seven segment decoder is 1010. what will the display show. b) A priority encoder has all inputs activated. Which input will be encoded. Why.
If the motor is driving a load whose torque requirement remains constant at 3Nm, independent of speed. Calculate the armature voltage Va to be applied in steady state, if the load to be driven at 1500RPM.
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