How many crosspoints are needed in a 1024-line, three-stage space switch if the input loading is six common-channel signals per line and the maximum accept- able blocking probability (using a Lee graph analysis) is 0.005? (a) If n = 16, N/n = 64 (b) If n = 32, N/n = 32 GANG 15

Question 2 Incorrect Mark 0.00 out of 1.00 P Flag question In a self-bias n-channel JFET, the operating point is to be set at Ip = 1.5 mA and Vps =10 V. The JFET parameters are IDss= 5 mA and Vp = 2 V. Given that VDD = 20 V. The value of Rs required for the circuit is Select one: a. 60.3 kohms b. 603 ohms c. 60.3 ohms d. 603 kohms Your answer is incorrect. The correct answer is: 603 ohms

Consider a binary symmetric channel with flip probability p. What is the transition probability matrix of the BSC? O a. O b. O C. P P (1-p)] (1 − p)] - p) (1-P)]) p) p p [(1-p) (1 - p) O d. [(1-p) p [(1-p) p]

Problem 1(a). Given the BIT circuit helow determine the voltages at the base and collector, and Ihe currents at the base and emitler. Assume 8- 120. (10 poinis) 15V R-6k Ru:- 90k lu Va Ra 45k Re- 4k Ans. Va In- Ve- Problem 1(b). Using the same circuit given in Problem 1, assume B= z (infinity). calculate the collector voltage and emitter curent. (S points) Ars. Ve=

Given that the base address is FoH. 1. Create a new asm project “Lab2_Q1.asm". Assume that port A of 8255A PPI is connected to 8085. Write assembly code to send the value of FFH to FoH. Enter a delay of 2 ms for each transmission.

C D .accepts this data and redistributes it to the n outputs. encoder De-multiplexer are faster in speed because the delay between the input and. * *.accepts this data and redistributes it to the n outputs. Decoder O output is due to the propagation delay of gate combinational circuit O Sequential network O Integrated circuit O Decoder O encoder O De-multiplexer

Question 9 only

Q.2) What is the method of arbitration of the PCI bus? Modify the following diagram arbitration, when there is a device C request use the PCI bus at the same time with device B. The arbiter services the device A then C to transfer 2 data for each, then service device B to transfer 1 data. CLK REOA REQ-S %3D GNTEA GNT-B %3D FRAME %3D %3D IRDY %3D TRDY Address Data Addre Data AD

a) i) Determine the number of bits per level required when using FSK with 4 different frequencies and QAM with a constellation of 256 points. ii) We want to digitise a signal that contains frequencies between 100 Hz and 1500 Hz, assuming 16 bits per sample. The digitised signal will be transmitted using a QPSK process. Determine the bit rate and the level rate. iii) We need to send 210,000 bits per second over a noiseless channel using 128- QAM. Determine the required bandwidth.

8051 . Write a program segment to perform the following tasks: (a) Keep monitoring the port P1 until its value is 15H (b) If condition in (a) is met, write value 00H to Port 2 (c) Send a low-to-high (L-to-H) pulse to P0.0