1. A combinational logic circuit which is used when it is desired to send data from two or more source through a single transmission line is known as

2. Conversion of binary number 10010012 to hexadecimal is

3. Which logic family dissipates the minimum power?

4. What logic function is obtained by adding an inverter to the inputs of an AND gate?

5. A bus is a group of _____ carrying digital signals.

6. The simplified form of the Boolean expression (X + Y + XY)(X + Z) is

7. De Morgan’s first theorem says that a NOR gate is equivalent to a bubbled _____ gate.

8. Addition of 102 and 112 is

9. How many bits are required to encode all twenty six letters ten symbols, and ten numerals?

10. An inverter is also called a _____ gate.

11. Conversion of decimal number 1310 to it’s octal number equivalent is

12. The binary number 1100 0101 has _____ bytes

13. With a NAND latch a low R and a low S produce a _____ condition.

14. Which of the following logic families has the highest noise immunity?

15. The ALU carries out arithmetic and logic operations. It processes _____ numbers rather than decimal numbers.

16. Conversion of decimal number 7110 to it’s binary number equivalent is

17. Which of the following flip-flops is free from race around problem?

18. Conversion of decimal number 6710 to it’s octal number equivalent is

19. A NOR gate has two or more input signals. All input must be _____ to get a high output

20. If a microcomputer has a 64K memory, what are the hexadecimal notations for the first and last memory location?

21. A microprocessor has memory locations from 0000 to 3FFF. Each memory location stores 1 byte. How bytes can the memory store? Express this in kilobytes?

22. The m-bit parallel adder consists of:

23. An OR gate has 6 inputs. How many input words are in its truth table?

24. Which TTL sub-family has maximum speed?

25. Conversion of binary number 1100012 to its decimal number is

26. The OR gate has two or more input signals. If any input is _____ the output is high.

27. How many memory locations can 14 address bits access?

28. The ASCII code is a 7-bit code for

29. The EXCLUSIVE – NOR gate is equivalent to an _____ gate followed by an invertor.

30. The 2’s compliment of binary number 010111.1100 is

31. In boolean algebra, the times sign stands for the _____ operation

32. What logic function is obtained by adding an inverter to the output of an AND gate?

33. Conversion of an octal number 74328 to a binary number is

34. Conversion of an octal number 1438 to hexadecimal number is

35. The memory cell of a dynamic RAM is simpler and smaller than the memory cell of a _____ RAM.

36. A byte is consist of _____ bits

37. What is the 1’s complement of 0000 1111 0010 1101 number?

38. Addition of 11012 and 10102 is

39. A NAND gate is equivalent to an AND gate followed by an inverter. All inputs must be _____ to get a low output

40. What logic function is produced by adding an inverter to the output of an AND gate?

41. Conversion of decimal number 2810 to it’s octal number equivalent is

42. Division of 1000112 by 1012 is

43. The NOR gate is logically equivalent to an OR gate followed by an _____

44. The dynamic race hazard problem occurs in

45. Resistor Ratio design is used in linear ICs because

46. What advantages do ICs have over discrete-device circuits due to their greater complexity (i.e. more circuitary in less area)

47. Conversion of an octal number 1368 to hexadecimal number is

48. The control and arithmetic-logic sections are called the _____

49. How many full adders are required to construct an m- bit parallel adder?

50. The number of binary bits required to represent a hexadecimal digit is

51. Instead of counting with binary numbers, a ring counter uses words that have a single high _____

52. Multiplication of 1112 by 1012 is

53. For what logic gate the outputs in complement of the input?

54. What is the decimal equivalent of 210?

55. The maximum number of TTL loads that a TTL device can drive reliably over the specified temperature range is

56. Conversion of hexadecimal number 6B216 to it’s binary number equivalent is

57. The output of the following gate is 0 only if at least one of the inputs is 1:

58. In which of the following adder circuits, the carry look ripple delay is eliminated?

59. With positive clocking the clock signal must be _____ for the flip-flop to respond.

60. Conversion of binary number 10100002 to an octal number is

61. Conversion of an octal number 478 to its binary number is

62. A _____ is a group of devices that store digital data.

63. Conversion of an octal number 31378 to it’s decimal equivalent is

64. Semiconductor memory is:

65. Conversion of an octal number 1108 to its decimal number is

66. Computer ICs work reliably because they are based on _____ design.

67. The maximum count which a 6-bit binary word can represent is

68. A half-adder is also known as:

69. Why are digital circuits easier to design than analog circuits?

70. A binary adder is a logic circuit that can add _____ binary numbers at a time.

71. A half-adder adds _____ bits

72. The 2764 is 65,536-bit EPROM organized as 8,192 words of 8 bits each. How many address lines does it have?

73. What does 4k represent?

74. Conversion of decimal number 4210 to it’s octal number equivalent is

75. The _____ is ultraviolet-light-erasable and electrically programmable. This allows the user to erase and store until programs and data are perfected.

76. The logic 1 in positive logic system is represented by:

77. Conversion of decimal number 9910 to it’s binary number equivalent is

78. The number of two-input NAND gates required to produce the two-input OR function is

79. A 2’s-complement adder-subtracter can add or subtract binary numbers. Sign-magnitude numbers represent _____ decimal numbers, and 2’s complements stand for _____ decimal numbers.

80. Which of the following is not functionally a complete set?

81. The fan-out capability of a digital building block can be defined as

82. Conversion of an octal number 738 to binary number is

83. Conversion of binary number 11000012 to hexadecimal is

84. The main advantage of hexadecimal numbers is the case of conversion from hexadecimal to _____ and vice versa.

85. Which of the following TTL subfamily is the fastest

86. The leading bit stands for the _____ and the remaining bits for the _____ is known as signed binary numbers.

87. A multiplexer is also known as

88. Standard TTL has a multiple emitter input transistor and a _____ output

89. A shift register moves the _____ left or right. Serial loading means storing a word in a shift register by entering _____ bit per clock pulse. With parallel or broadside loading, it takes only one _____ pulse to load the input word.

90. A flip-flop can store:

91. A logic circuit which is used to change a BCD number into an equivalent decimal number is

92. Cyclic codes are used in

93. The digits used in a binary number system are _____ and _____

94. The 2-input XOR gate has a high output only when the input bits are _____

95. Conversion of binary number 10010102 to to its decimal number is

96. A combinational logic circuit which generates particular binary word or number is

97. The 1’s compliment of binary number 11010 is:

98. Conversion of binary number 1100002 to hexadecimal is

99. Conversion of an octal number 1068 to binary number is

100. Conversion of binary number 1000112 to an octal number is

101. What table shows the electrical state of a digital circuit’s output for every possible combination of electrical states in the inputs?

102. What is the hexadecimal equivalent of a binary number 10101111

103. The two basic technologies for digital ICs are bipolar and MOS. Bipolar technology is preferred for_____ and _____ whereas MOS technology is better suited to LSI.

104. Small-scale integration, abbreviated _____ refers to fewer than 12 gates on the same chip. Medium-scale integration (MSI) means 12 to 100 gates per chip. And large-scale integration (LSI) refers to more than _____ gates per chip.

105. How many outputs signals can a gate have?

106. Conversion of an octal number 1258 to its decimal number is

107. What is the main advantage of using MOSFET rather than bipolar transistor circuitary in ICs?

108. The term sum-of-products in boolean algebra means

109. A shift register can be used for:

110. Names, numbers, and other information needed to solve a problem are called _____

111. A typical microcomputer may have up to 65,536 registers in its memory. Each of these registers, usually called a _____

112. Conversion of binary number 100000000002 to decimal number is

113. Conversion of binary number 111112 to an octal number is

114. Conversion of binary number 1011102 to an octal number is

115. The hexadecimal number system is widely used in analyzing and programming ______

116. A combinational logic circuit which is used to send data coming from a single source to two or more separate destinations is called as

117. How many full and half-adders are required to add 16-bit numbers?

118. An odd-parity generator produces an odd-parity bit to go along with the data. The parity of the transmitted data is _____ An XOR gate can test each received word for parity rejecting words with _____ parity.

119. A gate is a logic circuit with one or more input signals but _____ output signal.

120. The XOR gates are ideal for testing parity because even-parity words produce a _____ output and odd-parity words produce a _____ output

121. Which of the following is not true?

122. _____ has become the most widely used bipolar family.

123. The functional capacity of SSI devices is

124. The master slave JK flip-flop is effectively a combination of

125. Conversion of 10110112 to it’s decimal equivalent is

126. The octal equivalent of decimal 324.987 is

127. One way to simplify the sum-of-products equation is to use boolean algebra. Another way is the _____ map.

128. With a JK master-slave flip-flop the master is cocked when the clock is _____ and the slave is triggered when the clock is _____

129. The 7400 series, also called standard TTL, contains a variety of SSI and _____ chips that allow us to build all kinds of digital circuits and systems.

130. Conversion of decimal number 9910 to hexadecimal number is

131. Conversion of binary number 11011001111110002 to hexadecimal number is

132. When the LOAD input of a buffer register is active, the input word is stored on the next positive _____ edge.

133. Addition of 1101011012, 1110111012, 0001111112, 1001011012, 1111101112 is

134. A demultiplexer is also known as

135. Conversion of a octal number 638 to its decimal number is

136. Binary means _____

137. For an input pulse train of clock period T, the delay produced by an n stage shift register is

138. _____ is the fastest logic family; it’s used in high-speed applications.

139. Conversion of a hexadecimal number 6316 to binary number is

140. Which function positive logic is equivalent to OR function in negative logic?

141. Conversion of binary number 1011012 to its decimal number is

142. FETs are used in linear ICs to:

143. A flip-flop can store

144. Which of the following is the first integrated logic family?

145. A flip-flop is a _____ element that stores a binary digit as a low or high voltage.

146. Conversion of decimal number 8910 it’s binary number equivalent is

147. An AND gate has 7 inputs. How many input word are in its truth table?

148. When an inverter is placed between both inputs of an SR flip-flop, the resulting flip-flop is

149. Arithmetic operation are coded in

150. Which of the following electronic component is not found in ordinary ICs?

151. A shift register can be used for

152. Which of the following logic families use bipolar transistors?

153. Which of the following Boolean algebra rules is wrong?

154. Conversion of an octal number 608 to binary number is

155. Conversion of binary number 11000112 to hexadecimal is

156. Conversion of binary number 11000112 to its decimal number is

157. Conversion of binary number 11000112 to an octal number is

158. A preliminary guide for comparing the simplicity of logic circuits is to count the number of input _____ leads.

159. An AND gate has 7 inputs, what is the only input word that produces a 1 output?

160. Convert the 1000 0000 0000 1111 signed binary number to decimal number.

161. The _____ is a sequence of instructions that tells the computer how to process the data.

162. The output of the following gate is 1 only if at least one of its inputs is 0.

163. The highest decimal number that can be represented with 10 binary digits is

164. The clock signals are used in sequential logic circuits

165. In boolean algebra, the overbar stands for the NOT operation, the plus sign stands for the _____ operation.

166. The reduced form of the Boolean expression (A+B)(A+C) is:

167. A full-adder adds _____ bits, and producing a SUM and a _____

168. The radix of the binary number is:

169. An XOR gate recognizes only words with an _____ number of 1’s.

170. What is the ASCII code for T?

171. Express 8192 in K units.

172. The functional capacity for LSI devices is

173. What is the 2’s-complement representation of -24 in a 16-bit microcomputer?

174. Which gates is known as universal gate?

175. _____is an abbreviation for binary digit.

176. Conversion of hexadecimal number 1D7F16 to a decimal number is

177. An inventor is a gate with only _____ input; the output is always in the opposite state from the input

178. Parallel adders are

179. A microcomputer is a computer that uses a _____ for its CPU.

180. Which of the following is a universal gate?

181. The number of input words in a truth table always equals _____ where n is the number of inputs bits.

182. Conversion of decimal number 6110 to it’s binary number equivalent is

183. Multiplication of 478 by 528 is

184. Which of the following boolean algebra statements represent commutative law

185. Binary-Coded-decimal (BCD) numbers express each digit as a _____

186. Computers use thousands of flip-flops. To coordinate the overall action, a common signal called the _____ is sent to each flip-flop.

187. Conversion of decimal number 9310 to hexadecimal number is

188. Conversion of decimal number 9910 to it’s octal number equivalent is

189. The 2’s compliment of binary number 0.01011 is:

190. The _____ gate has two or more input signals. All inputs must be high to get a high output

191. Conversion of an octal number 1428 to binary number is

192. Conversion of hexadecimal number 93FA16 to it’s binary number equivalent is

193. BCD numbers are useful whenever _____ information is transferred into or out of a digital system.

194. A NOR gate recognizes only the input word whose bits are _____

195. How many bytes are there in 1011 1001 0110 1110 numbers?

196. Consider as RS flip-flops with both inputs set to 0. If a momentary ‘1’ is applied at the input S, then the output

197. Which of the following logic expression is wrong?

198. Subtraction of 1001011002 from 11101010102 is

199. Addition of 1101012 and 1011112 is

200. Conversion of an octal number 1348 to a binary number is

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