Description : What is the fundamental difference between analog and digital computers?
Last Answer : Digital computers deal with discrete quantities, while analog computers deal with continuous physical variables.
Description : What are computers called that combine the functions of both analog and digital computers?
Last Answer : Hybrid computers.
Description : What type of source is generally used in high-data-rate digital applications?
Last Answer : Laser diode.
Description : In the inverting configuration, what is the voltage (for all practical purposes) at the inverting input to the operational amplifier if the input signal is a 1-volt, peak-to-peak sine wave?
Last Answer : 0 volts.
Description : What are the purposes of the transformer in a power supply?
Last Answer : It couples the power supply to the ac line voltage, isolates the ac line voltage from the load, and steps this voltage up or down to the desired level.
Description : For what purposes is the SNAP II system designed?
Last Answer : To support shipboard and intermediate level maintenance, supply, financial, and administrative functions.
Description : The pump used for irrigation purposes is generally designed for (A) Large capacity & high head (B) Large capacity & low head (C) Small capacity & high head (D) Small capacity & low head
Last Answer : (B) Large capacity & low head
Description : Pick up the correct statement from the following: (A) For nautical purposes, low water level is generally referred to by the navigators (B) The depth of the bed of the sea from the surface of water is ... (C) The contour lines on the bed of a water body are called fathoms (D) All the above
Last Answer : (D) All the above
Description : The conversion of digital signal into analog for purposes of transmitting into the telephone line is done through ______. A. ISDN B. Radio C. RS232C D. Modem
Last Answer : D. Modem
Description : Which factor is not included while building an audience persona for digital marketing purposes? 1. Demographic 2. Topographic 3. Psychographics 4. Techno graphic
Last Answer : Topographic
Description : With early computers, the programmer had to translate instructions into what type of language form?
Last Answer : Machine.
Description : What is the great advantage of computers over typewriters?
Last Answer : Correcting errors.
Description : What type of computers are small and inexpensive yet provide a lot of computing power?
Last Answer : Microcomputers and minicomputers.
Description : On third generation computers, what results are gained by faster internal processing speeds?
Last Answer : Faster execution of instructions.
Description : What do the smaller circuits in third generation computers allow for?
Last Answer : Faster internal processing speeds.
Description : In second generation computers, how was the storage capacity greatly increased?
Last Answer : With the introduction of magnetic disk storage and the use of
Description : How were processing speed and reliability increased in second generation computers?
Last Answer : By the use of small, long lasting transistors.
Description : The software (computer program) used on first generation computers was what type?
Last Answer : Unsophisticated and machine oriented.
Description : In first generation computers, internal processing functions were measured by what division of time?
Last Answer : Thousandths of a second (millisecond).
Description : How did vacuum tubes cause a problem for first generation computers
Last Answer : They were unreliable, required a lot of power to run, and produced so much heat that air conditioning was needed to protect computer parts.
Description : What were computers of the first generation characterized by?
Last Answer : The vacuum tube.
Description : Early analog computers were what type of devices?
Last Answer : Mechanical or electromechanical.
Description : What are analog computers designed to measure?
Last Answer : Continuous electrical or physical conditions.
Description : All analog computers are what type of computers?
Last Answer : Special-purpose.
Description : Rather than using a stored program, a special-purpose computer's applicability to a particular problem is a function of what?
Last Answer : Its design
Description : In electronic computers, vacuum tubes were replaced by transistors and transistors have been replaced by what device?
Last Answer : Integrated circuits.
Description : How do electromechanical computers differ from the mechanical computers?
Last Answer : Electromechanical computers use electrical components to perform some of the calculations.
Description : The Navy uses analog computers primarily for what purpose?
Last Answer : Gun fire control
Description : Mechanical computers are considered to be of what type?
Last Answer : Analog.
Description : How are computers classified?
Last Answer : Technology (mechanical, electromechanical, electronic), purpose (special or general), type of data they handle (analog or digital), cost, physical size (handheld to room size)
Description : When computers use the cylinder method to store data on a hard disk pack, what three items make up the address that tells the computer where on a specific disk to store the data?
Last Answer : . a. Cylinder number. b. Recording surface number.
Description : Any system composed of one or more computers and terminals can be defined as what?
Last Answer : A network.
Description : What is another name for computers designed to be character-oriented or character-addressable?
Last Answer : Variable-word-length or byte-addressable.
Description : What area in the computer's primary storage area holds the processing instructions (the program)?
Last Answer : Program storage area.
Description : What were the first computers designed to manipulate in order to solve arithmetic problems?
Last Answer : Numbers.
Description : Is the drive circuitry generally more complex for an LED or a laser diode? Why?
Last Answer : For a laser diode. The laser diode transmitter generally contains output power control circuitry and may contain a TE cooler and some circuitry associated with the TE cooler.
Description : For what types of applications are APDs generally used?
Last Answer : For high-data-rate applications and for low- or moderate-data rate applications where receivers with extremely low sensitivities are required.
Description : Why is detector saturation not generally a problem in fiber optic communications systems?
Last Answer : Because fiber optic communications systems operate at low optical power levels.
Description : What type of antennas are generally used at earth terminals?
Last Answer : Large, high-gain parabolic antennas.
Description : Will fiber coupling loss generally increase or decrease if the mode field diameter of a single mode fiber is decreased?
Last Answer : Increase.
Description : Will the cutoff wavelength of uncabled fibers (lcf) generally have a value higher or lower than the cutoff wavelength of cabled fibers (λcc)?
Last Answer : Higher.
Description : Why is it generally only necessary to refer to point-to-point data links when discussing the process of fiber optic system design?
Last Answer : Because fiber optic systems that incorporate complex architectures can be simplified into a collection of point-to-point data links before beginning the design process.
Description : What is a clock with regard to digital equipment?
Last Answer : A timing signal.
Description : Why would a laser diode be used in a low-data-rate digital application?
Last Answer : When extremely high transmitter output powers are required.
Description : What type of source is typically used in low-data-rate digital applications?
Last Answer : LED.
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 : In a digital computer, what does the number of decimal places in the constant depend on?
Last Answer : Design of the computer processing unit.
Description : The accuracy of a digital computer is governed by what factor?
Last Answer : The number of significant figures carried in the computations.
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 : Older, single-sided, single-density floppy disk drives would probably use what method for encoding digital data onto the floppy disk?
Last Answer : Frequency-modulation encoding.