Description : What format of digital tape recording takes a serial input stream of data pulses, breaks them up, and records them on more than one data track?
Last Answer : Serial-parallel digital magnetic tape recording.
Description : . What type of counter has clock pulses applied to all FFs?
Last Answer : Synchronous.
Description : In a bistable multivibrator, how many trigger pulses are needed to produce one complete cycle in the output?
Last Answer : Two.
Description : what causes the initial and final pulses on the receiver output signal?
Last Answer : Leakage from the duplexer.
Description : What will be the output of Q if J is HIGH, PS and CLR are HIGH, and the clock is going negative?
Last Answer : Set, or HIGH (1).
Last Answer : A 12 bit counter type A/D converter uses a 1 MHz clock. If the full scale output is +10V, its resolution output is 2.44mV.
Description : Which receiver component converts the IF pulses to video pulses?
Last Answer : Detector.
Description : Which of the basic timing circuits produces sharp trigger pulses directly?
Last Answer : Blocking oscillators.
Description : A self-synchronized radar system obtains timing trigger pulses from what source?
Last Answer : Transmitter.
Description : Range-marker generators produce pulses based on what radar constant?
Last Answer : The radar mile (12.36 microseconds).
Description : Current that flows in pulses in the same direction is called
Last Answer : Pulsating dc
Description : What method for encoding digital data enables you to store more data in less space by limiting the distance between pulses on a hard disk?
Last Answer : Run length-limited (RLL) encoding.
Description : Which method of digital data encoding does NOT return the tape to neutral between pulses but, instead, saturates the tape positively or negatively as the incoming data changes between zero and one?
Last Answer : Non-return-to-zero (NRZ) encoding.
Description : Which digital data encoding method records a digital one as a positive pulse and a digital (zero) as a negative pulse and returns the tape to neutral between pulses?
Last Answer : Return-to-zero (RZ) encoding.
Description : In digital magnetic tape recording, the series of recorded digital pulses can represent what three types of data?
Last Answer : a. Data used by digital computers. b. Pulsed squarewave signals. c. Digitized analog waveforms.
Description : What would be the proper command to set a DCE clock rate of 56k for a serial interface? A. Router (config) # clockrate 56000 B. Router# clockrate 56000. C. Router (config-if) #clock rate 56000 D. Router (config-if) # clockrate 56k
Last Answer : Router (config-if) #clock rate 56000
Description : How many FFs would be required for an 8-bit shift register?
Last Answer : Eight.
Description : How many stages are required to store a 16-bit word?
Last Answer : 16.
Description : Which performance parameter is the minimum amount of optical power required to achieve a specific bit-error rate (BER) in digital systems or a given signal-to-noise ratio (SNR) in analog systems?
Last Answer : Receiver sensitivity.
Description : If current gain is required from an rf amplifier, what type of component should be used as an output coupling element?
Last Answer : A step-down transformer.
Description : What characteristic is determined by the time required for a voltage wave to travel from the input end of an artificial transmission line to the output end and back again?
Last Answer : Pulse width
Last Answer : Pulse width.
Description : What circuit section is required in the output of a multivibrator modulator to eliminate unwanted output frequencies?
Last Answer : An LCR filter.
Description : The size of the ROM required to build an 8-bit adder/subtractor with mode control, carry input, carry output and two’s complement overflow output is given as
Last Answer : (B) 218 × 10
Description : Serial-to-parallel and parallel-to-serial conversions are accomplished by what type of circuit?
Last Answer : Shift register.
Description : A shunt-type voltage regulator is connected in serial/parallel (which one) with the load resistance.
Last Answer : In parallel.
Description : __________ transmits one bit of data through a single wire. A. Serial Port B. Fire wire C. Parallel Port D. None of the Above
Last Answer : A. Serial Port
Description : How many 8-bit characters can be transmitted per second over a 9600 baud serial communication link using asynchronous mode of transmission with one start bit, eight data bits, two stop bits, and one parity bit ? a. 600 b. 800 c. 876 d. 1200
Last Answer : b. 800
Description : In 8096, mode ____ of serial port are ___ modes commonly used for ____ communications. a) 1, 8bit, single processor b) 0, 7bit, multiple microcontroller c) 2, 9 bit, multiple processors d) 3, 8 bit, multiple microcontroller
Last Answer : a) 1, 8bit, single processor
Last Answer : c) 2, 9 bit, multiple processors
Description : What is USB ? (1) Ultimate Service Bit (2) Universal Sent-Bit (3) Universal Serial Bus (4) Urgent Sent Bit
Last Answer : Universal Serial Bus
Description : A, what logic element enables FF3 to toggle with the clock?
Last Answer : The AND gate
Description : What type of clock is used when more than one operation is to be completed during one clock cycle?
Last Answer : . A multiphase clock.
Description : What is needed to use a monostable or one-shot multivibrator for a clock circuit?
Last Answer : Triggers.
Description : What is the simplest type of clock circuit?
Last Answer : An astable or free-running multivibrator.
Description : What is a clock with regard to digital equipment?
Last Answer : A timing signal.
Description : What logic levels must exist for the FF to be toggled by the clock?
Last Answer : Both J and K must be HIGH.
Description : Julie is going on an extended trip for three weeks. She lives in a remote area where there are frequent electrical power outages which can last up to three or four days. Julie has quite a bit of food ... power, while another house may have no power. She won?t be able to have a neighbor chec -Riddles
Last Answer : One thing Julie could do is freeze a tray of ice-cubes, and turn the tray of ice upside down in her freezer. When she comes home, she should check the tray. If the ice cubes are still in the ... clean out the freezer. She will have to make a judgment call if the ice-cubes are only slightly thawed.
Description : What synchronization is provided so that the start and end of message is identified? A. Carrier B. Character C. Bit D. Clock
Last Answer : B. Character
Description : Asynchronous protocol is A. message oriented B. clock oriented C. bit oriented D. character oriented
Last Answer : D. character oriented
Description : Consider a 32 - bit microprocessor, with a 16 - bit external data bus, driven by an 8 MHz input clock. Assume that the microprocessor has a bus cycle whose minimum duration equals four input clock cycles. What ... (A) 8x106 bytes/sec (B) 4x106 bytes/sec (C) 16x106 bytes/sec (D) 4x109 bytes/sec
Last Answer : (B) 4x106 bytes/sec
Description : Each flip-flop in a 4-bit ripple counter introduces a maximum delay of 40 n sec. The maximum clock frequency is (a) 2.65 MHz (b) 6.25 MHz (c) 5.26 MHz (d) 6.52 MHz
Last Answer : Each flip-flop in a 4-bit ripple counter introduces a maximum delay of 40 ns. The maximum clock frequency is 6.25MHz. nff * Tdelay = 4*40 =160ns so, max. frequency = 1/ (200*10-9 ) = 6.25MHz
Last Answer : The conversion time of a 12 bit successive approximation A/D converter using a 1 MHz clock is 12μs.
Last Answer : An 8 bit converter type A/D converter makes at least 8000conversions/sec. The clock frequency used is 2MHz.
Last Answer : A 12 bit counter type A/D converter uses a 1 MHz clock. Its maximum conversion time is 4096μs.
Description : Explain any two geographical conditions required for the cultivation of pulses. -SST 10th
Last Answer : Pulses are mostly grown in rotation with other crops because: (i) Pulses need less moisture and survive even in dry conditions. (ii) Being leguminous crops, all these crops help in restoring soil ... nitrogen from the air. (iii) Major pulse producing states are: Madhya Pradesh and Uttar Pradesh.
Description : The bits are shifted and the first flip-flop receives its binary information from the____ a. Serial output b. Serial input c. Both d. None
Last Answer : b. Serial input
Description : Serial access memories are useful in applications where A) Data consists of numbers B) Short access time is required C) Each stored word is processed differently D) Data naturally needs to flow in and out in serial form
Last Answer : Answer : D
Description : Serial access memories are useful in applications where a. Data consists of numbers b. Short access time is required c. Each stored word is processed differently d. Data naturally needs to flow in and out in a serial form
Last Answer : d. Data naturally needs to flow in and out in a serial form