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You Are On Multi Choice Question Bank SET 1252
62601. A multivibrator is a circuit that changes between two digital levels on a continuous, free-running basis or on demand.
(A): True (B): False
62602. A monostable multivibrator is commonly called a two shot.
(A): True (B): False
62603. What is the function of the comparators in the 555 timer circuit?
(A): to compare the output voltages to the internal voltage divider (B): to compare the input voltages to the internal voltage divider (C): to compare the output voltages to the external voltage divider (D): to compare the input voltages to the external voltage divider
62604. When a capacitor charges:
(A): the voltage across the plates rises exponentially (B): the circuit current falls exponentially (C): the capacitor charges to the source voltage in 5×RC seconds (D): all of the above
62605. The ________ is defined as the time the output is active divided by the total period of the output signal.
(A): on time (B): off time (C): duty cycle (D): active ratio
62606. A 22-k resistor and a 0.02-F capacitor are connected in series to a 5-V source. How long will it take the capacitor to charge to 3.4 V?
(A): 0.44 ms (B): 0.501 ms (C): 0.66 ms (D): 0.70 ms
62607. What does the discharge transistor do in the 555 timer circuit?
(A): charge the external capacitor to stop the timing (B): charge the external capacitor to start the timing over again (C): discharge the external capacitor to stop the timing (D): discharge the external capacitor to start the timing over again
62608. One hex digit is sometimes referred to as a(n):
(A): byte (B): nibble (C): grouping (D): instruction
62609. Which of the following is the most widely used alphanumeric code for computer input and output?
(A): Gray (B): ASCII (C): Parity (D): EBCDIC
62610. If a typical PC uses a 20-bit address code, how much memory can the CPU address?
(A): 20 MB (B): 10 MB (C): 1 MB (D): 580 MB
62611. Convert 59.7210 to BCD.
(A): 111011 (B): 01011001.01110010 (C): 1110.11 (D): 0101100101110010
62612. Convert 8B3F16 to binary.
(A): 35647 (B): 011010 (C): 1011001111100011 (D): 1000101100111111
62613. Which is typically the longest: bit, byte, nibble, word?
(A): Bit (B): Byte (C): Nibble (D): Word
62614. Assign the proper odd parity bit to the code 111001.
(A): 1111011 (B): 1111001 (C): 0111111 (D): 0011111
62615. Convert decimal 64 to binary.
(A): 01010010 (B): 01000000 (C): 00110110 (D): 01001000
62616. Convert hexadecimal value C1 to binary.
(A): 11000001 (B): 1000111 (C): 111000100 (D): 111000001
62617. Convert the following octal number to decimal. 178
(A): 51 (B): 82 (C): 57 (D): 15
62618. Convert the following binary number to octal. 0101111002
(A): 1728 (B): 2728 (C): 1748 (D): 2748
62619. How many binary digits are required to count to 10010?
(A): 7 (B): 2 (C): 3 (D): 100
62620. The BCD number for decimal 347 is ________.
(A): 1100 1011 1000 (B): 0011 0100 0111 (C): 0011 0100 0001 (D): 1100 1011 0110
62621. The binary number for octal 458 is ________.
(A): 100010 (B): 100101 (C): 110101 (D): 100100
62622. The sum of 11101 + 10111 equals ________.
(A): 110011 (B): 100001 (C): 110100 (D): 100100
62623. Convert the following binary number to decimal. 100110102
(A): 154 (B): 155 (C): 153 (D): 157
62624. The decimal number 188 is equal to the binary number ________.
(A): 10111100 (B): 0111000 (C): 1100011 (D): 1111000
62625. Convert the following binary number to octal. 0011010112
(A): 1538 (B): 3518 (C): 2538 (D): 3528
62626. How many bits are in an ASCII character?
(A): 16 (B): 8 (C): 7 (D): 4
62627. A binary number's value changes most drastically when the ________ is changed.
(A): MSB (B): frequency (C): LSB (D): duty cycle
62628. Convert decimal 213 to binary.
(A): 11001101 (B): 11010101 (C): 01111001 (D): 11100011
62629. The decimal number for octal 748 is ________.
(A): 74 (B): 60 (C): 22 (D): 62
62630. The sum of the two BCD numbers, 0011 + 0011, is ________.
(A): 0110 (B): 0111 (C): 0011 (D): 1100
62631. Convert binary 01001110 to decimal.
(A): 4E (B): 78 (C): 76 (D): 116
62632. Which is not a word size?
(A): 64 (B): 28 (C): 16 (D): 8
62633. The octal numbering system:
(A): simplifies tasks (B): groups binary numbers in groups of 4 (C): saves time (D): simplifies tasks and saves time
62634. The binary number 1110 is equal to the decimal number ________.
(A): 3 (B): 1 (C): 7 (D): 14
62635. Convert the following octal number to binary.768
(A): 1101112 (B): 1111102 (C): 1111002 (D): 1001112
62636. Convert 11001010001101012 to hexadecimal.
(A): 121035 (B): CA35 (C): 53AC1 (D): 530121
62637. Convert the following decimal number to octal.281
(A): 1348 (B): 4318 (C): 3318 (D): 1338
62638. When using even parity, where is the parity bit placed?
(A): Before the MSB (B): After the LSB (C): In the parity word (D): After the odd parity bit
62639. Convert the following octal number to decimal. 358
(A): 71 (B): 17 (C): 92 (D): 29
62640. Convert binary 11001111 to hexadecimal.
(A): 8F16 (B): CE16 (C): DF16 (D): CF16
62641. Convert 17318 to decimal.
(A): 216.4 (B): 985 (C): 3D9 (D): 1123
62642. An analog signal has a range from 0 V to 5 V. What is the total number of analog possibilities within this range?
(A): 5 (B): 50 (C): 250 (D): infinite
62643. Hexadecimal letters A through F are used for decimal equivalent values from:
(A): 1 through 6 (B): 9 through 14 (C): 10 through 15 (D): 11 through 17
62644. Convert the following decimal number to 8-bit binary.35
(A): 000100102 (B): 000100112 (C): 001000112 (D): 001000102
62645. Convert the following hexadecimal number to binary.C916
(A): 101110012 (B): 101110112 (C): 100111002 (D): 110010012
62646. Convert the following decimal number to hexadecimal.125
(A): 7D16 (B): D716 (C): 7C16 (D): C716
62647. A decimal 11 in BCD is ________.
(A): 00001011 (B): 00001100 (C): 00010001 (D): 00010010
62648. What is the resultant binary of the decimal problem 49 + 01 = ?
(A): 01010101 (B): 00110101 (C): 00110010 (D): 00110001
62649. The difference of 111 – 001 equals ________.
(A): 100 (B): 111 (C): 001 (D): 110
62650. Convert the binary number 1100 to Gray code.
(A): 0011 (B): 1010 (C): 1100 (D): 1001
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