Description : Which of the following statements are true ? I. A circuit that adds two bits, producing a sum bit and a carry bit is called half adder. II. A circuit that adds two bits, producing a sum bit and a carry bit is called full adder. ... an inverter. (A) I & II (B) II & III (C) I, II, III (D) I, III & IV
Last Answer : (D) I, III & IV
Description : Which code the decimal digits are represented by the 8421 BCD code preceded by 1111: a. ASCII b. EBCDIC c. Both d. None of these
Last Answer : b. EBCDIC
Description : How many full adders are required to add four-digit numbers?
Last Answer : Four.
Description : Consider a full-adder with the following input values: (a) x=1, y=0 and Ci(carry input) = 0 (b) x=0, y=1 and Ci = 1 Compute the values of S(sum) and C0 (carry output) for the above input values. (A) S=1 , C0= 0 and ... C0= 1 (C) S=1 , C0= 1 and S=0 , C0= 0 (D) S=0 , C0= 1 and S=1 , C0= 0
Last Answer : (A) S=1 , C0= 0 and S=0 , C0= 1
Description : Which of the following is a sequential circuit? (A) Multiplexer (B) Decoder (C) Counter (D) Full adder
Last Answer : (C) Counter
Description : An integer constant in C must have A) At least one digit B) At least one decimal point C) A comma along with digits D) Digits separated by commas
Last Answer : A) At least one digit
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 : The Karnaugh map for a Boolean function is given as The simplified Boolean equation for the above Karnaugh Map is (A) AB + CD + AB’ + AD (B) AB + AC + AD + BCD (C) AB + AD + BC + ACD (D) AB + AC + BC + BCD
Last Answer : (B) AB + AC + AD + BCD
Description : Define Half adder and full adder
Last Answer : The logic circuit that performs the addition of two bits is a half adder. The circuit that performs the addition of three bits is a full adder.
Description : Define half adder and full adder
Description : The correction to be applied in decimal adder to the generated sum is (A) 00101 (B) 00110 (C) 01101 (D) 01010
Last Answer : Ans: B The correction to be applied in decimal adder to the generated sum is 00110. When the four bit sum is more than 9 then the sum is invalid. In such cases, add +6(i.e. 0110) to the ... the six invalid states. If a carry is generated when adding 6, add the carry to the next four bit group .
Description : Which of the following is correct full form of BCD? A) Binary Coded Decimal B) Bit Coded Decimal C) Binary Coded Digit D) Bit Coded Digit
Last Answer : Answer : A
Description : How many strings of 5 digits have the property that the sum of their digits is 7 ? (A) 66 (B) 330 (C) 495 (D) 99
Last Answer : (B) 330
Description : . What will be the output of a half adder when both inputs are 1s?
Last Answer : Sum equals 0 with a carry of 1.
Description : What advantage does a half adder have over a quarter adder?
Last Answer : The half adder generates a carry.
Description : The gates required to build a half adder are (A) EX-OR gate and NOR gate (B) EX-OR gate and OR gate (C) EX-OR gate and AND gate (D) Four NAND gates.
Last Answer : (C) EX-OR gate and AND gate
Description : A half adder can be constructed from
Last Answer : A half adder can be constructed from One XOR gate and one 'AND‘ gate with their input connected in parallel
Description : The output of executing string.ascii_letters can also be achieved by: a) string.ascii_lowercase_string.digits b) string.ascii_lowercase+string.ascii_upercase c) string.letters d) string.lowercase_string.upercase
Last Answer : d) string.lowercase_string.upercase
Description : In a binary Hamming code the number of check digits is r then number of message digits is equal to: (A) 2r-1 (B) 2r-r-1 (C) 2r-r+1 (D) 2r+r-1
Last Answer : (B) 2r-r-1
Description : If there are n integers to sort, each integer has d digits and each digit is in the set {1,2, ..., k}, radix sort can sort the numbers in: (A) O(d n k) (B) O(d nk) (C) O((d+n)k) (D) O(d(n+k))
Last Answer : (D) O(d(n+k))
Description : BCD is A) Binary Coded Decimal B) Bit Coded Decimal C) Binary Coded Digit D) Bit Coded Digit
Description : what is the BCD for a decimal number 559. a [0101 0101 1001],, b. [0101 0001 1010] c. [0101 1001 1001] d. [1001 1010 0101]
Last Answer : a [0101 0101 1001],,
Description : BCD is a. Binary Coded Decimal b. Bit Coded Decimal c. Binary Coded Digit d. Bit Coded Digit
Last Answer : Binary Coded Decimal
Description : BCD stands for: a) Base Coded Decimal b) Bilateral Coded Decimal c) Binary Coded Decimal d) None of The Above
Last Answer : c) Binary Coded Decima
Description : The main advantage of hexadecimal numbers is the case of conversion from hexadecimal to ____and vice versa: a) binary b) decimal c) BCD d) None of The Above
Last Answer : a) binary
Description : The decimal equivalent of the BCD value 0111 0110 1000 is ________. 124) A) 70810 B) 17210 C) 76810 D) 6871
Last Answer : C) 76810
Description : The decimal equivalent of the BCD value 1000 0110 is ________. 118) A) 8610 B) 7610 C) 8810 D) 8110
Last Answer : A) 8610
Description : The decimal equivalent of the BCD value 1001 1001 is ________. 113) A) 9310 B) 9510 C) 9910 D) 8910
Last Answer : C) 9910
Description : The BCD equivalent of decimal 64 is ________. 101) A) 0111 0110BCD B) 0111 1110BCD C) 0100 0010BCD D) 0110 0100BCD
Last Answer : D) 0110 0100BCD
Description : The BCD equivalent of decimal 109 is ________. 99) A) 1110 1011BCD B) 0001 0000 1001BCD C) 1110 1110 1100BCD D) 0001 0000 1101BCD
Last Answer : B) 0001 0000 1001BCD
Description : Which numbering formats are really codes rather than true number systems? 96) A) hexadecimal and octal B) binary and octal C) decimal and binary D) BCD and ASCII
Last Answer : Which numbering formats are really codes rather than true number systems?
Description : Which numbering format is the basis for digital electronic circuitry? 76) A) decimal B) BCD C) octal D) binary
Last Answer : D) binary
Description : The BCD equivalent of decimal 912 is ________. 60) A) 1001 0001 0010BCD B) 1001 1000 0001BCD C) 0111 1111 1110BCD D) 0010 001 1001BCD
Last Answer : A) 1001 0001 0010BCD
Description : The decimal equivalent of the BCD value 1001 0011 is ________. 59) A) 9310 B) 16610 C) 9810 D) 17610
Last Answer : A) 9310
Description : The decimal equivalent of the BCD value 0010 0011 is ________. 57) A) 2710 B) 2310 C) 4310 D) 2010
Last Answer : B) 2310
Description : The BCD equivalent of decimal 88 is ________. 50) A) 1000 1000BCD B) 1010 1000BCD C) 1100 0010BCD D) 1001 0000BCD
Last Answer : A) 1000 1000BCD
Description : The decimal equivalent of the BCD value 0011 1001 0010 is ________. 32) A) 49010 B) 39210 C) 98210 D) 4131
Last Answer : B) 39210
Description : BCD stands for: a. Binary coded decimal b. Based coded decimal c. Both A and B d. None of these
Last Answer : a. Binary coded decimal
Last Answer : a. Binary Coded Decimal
Description : BCD stands for: a. Binary coded decimal b. Binary coded decoded c. Both a & b d. none of these
Description : Which of the following is not a weighted code? (1) Excess 3-Code (2) Binary Number System (3) Decimal Number System (4) BCD Number System
Last Answer : Excess 3-Code
Description : In the 8421 BCD code the decimal number 125 is written as (A) 1111101 (B) 0001 0010 0101 (C) 7D (D) None of the bove
Last Answer : In the 8421 BCD code the decimal number 125 is written as 1111101
Description : What is the output of the following code AL=88 BCD, CL=49 BCD ADD AL, CL DAA a) D7, CF=1 b) 37, CF=1 c) 73, CF=1 d) 7D, CF=1
Last Answer : a) D7, CF=1
Description : A job has four pages A, B, C, D and the main memory has two page frames only. The job needs to process its pages in following order: ABACABDBACD Assuming that a page interrupt occurs when a new page is brought in the main ... replacement algorithms are (A) 9 and 7 (B) 7 and 6 (C) 9 and 8 (D) 8 and 6
Last Answer : (C) 9 and 8
Description : Consider a uniprocessor system where new processes arrive at an average of five processes per minute and each process needs an average of 6 seconds of service time. What will be the CPU utilization ? (A) 80 % (B) 50 % (C) 60 % (D) 30 %
Last Answer : (B) 50 %
Description : The 16 bit register is separated into groups of 4 bit where each groups is called: a. BCD b. Nibble c. Half byte d. None of these
Last Answer : b. Nibble
Description : What is the per cent increase in the number of products manufactured by the company in the year 2006 from the previous year ? (Rounded off to two digits after decimal) (1) 19·25 (2) 33·33 (3) 10·45 (4) 42·66 (5) None of these
Last Answer : (5) None of these
Description : The number of products sold by the company in the year 2004 is what per cent of the number of products manufactured by it in that year ? (Rounded off to two digits after decimal) (1) 71·43 (2) 67·51 (3) 81·67 (4) 56·29 (5) None of these
Last Answer : 1) 71·43 v
Description : Number of girls enrolled in only Dancing classes is what per cent of the boys enrolled in the same? (Rounded off to two digits after decimal) (1) 38•67 (2) 35•71 (3) 41•83 (4) 28•62 (5) None of these
Last Answer : (2) 35•71