MCQOPTIONS
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MCQOPTIONS
This section includes 239 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Electronics knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
A method of converting decimal to binary is by successive division. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 102. |
Each hexadecimal digit converts to ________ binary digits. |
| A. | four |
| B. | eight |
| C. | 12 |
| D. | six |
| Answer» B. eight | |
| 103. |
The largest single BCD digit has a binary value of 15. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 104. |
Decimal 42 is equivalent to binary ________. |
| A. | 1000010 |
| B. | 52 |
| C. | 2A |
| D. | 101010 |
| Answer» E. | |
| 105. |
The primary advantage of the hexadecimal number system is the ease with which conversion can be made between binary and hexadecimal numbers. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 106. |
Zeros may be added to the left of the MSB to produce even groups of 4 bits when converting from binary to hexadecimal. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 107. |
The largest unsigned decimal number that can be represented in binary using six bits is ________. |
| A. | 63 |
| B. | 64 |
| C. | 127 |
| D. | 128 |
| Answer» B. 64 | |
| 108. |
Digital circuitry is the foundation of digital computers and many automated control systems. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 109. |
A typical CD-ROM can store ________ of digital data. |
| A. | 90 minutes |
| B. | analog portions |
| C. | 650 megabytes |
| D. | octal bytes |
| Answer» D. octal bytes | |
| 110. |
Hexadecimal AA is ________ in decimal. |
| A. | 16510 |
| B. | 17010 |
| C. | 18610 |
| D. | 17616 |
| Answer» C. 18610 | |
| 111. |
The decimal number –128 is represented in the signed 2's complement system as ________. |
| A. | 1111 1110 |
| B. | 0111 1111 |
| C. | 1000 0000 |
| D. | 1111 1111 |
| Answer» D. 1111 1111 | |
| 112. |
A binary code decimal representation of a binary number will always have more bits than the binary number. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 113. |
Digital electronics must use a numbering system that has more than ten digits. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 114. |
Decimal 37 is ________ in binary with an even parity bit. |
| A. | 100101 |
| B. | 10100101 |
| C. | 11000100 |
| D. | 1001011 |
| Answer» C. 11000100 | |
| 115. |
Convert the following binary number to octal. 0011010112 |
| A. | 1538 |
| B. | 3518 |
| C. | 2538 |
| D. | 3528 |
| Answer» B. 3518 | |
| 116. |
Convert the Gray code 1011 to binary. |
| A. | 1011 |
| B. | 1010 |
| C. | 100 |
| D. | 1101 |
| Answer» E. | |
| 117. |
Determine the decimal equivalent of the signed binary number 11110100 in 1's complement. |
| A. | 116 |
| B. | –12 |
| C. | 11 |
| D. | 128 |
| Answer» D. 128 | |
| 118. |
Convert the following decimal number to BCD.469 |
| A. | 100101000000 |
| B. | 10001101001 |
| C. | 100001000000 |
| D. | 100101000000 |
| Answer» C. 100001000000 | |
| 119. |
Even-parity 01101000 binary is ________in hexadecimal. |
| A. | C816 |
| B. | 6816 |
| C. | D016 |
| D. | Nothing. Parity does not check. |
| Answer» E. | |
| 120. |
Convert the following hexadecimal number to decimal.1CF16 |
| A. | 463 |
| B. | 4033 |
| C. | 479 |
| D. | 4049 |
| Answer» B. 4033 | |
| 121. |
How many bits are in an ASCII character? |
| A. | 16 |
| B. | 8 |
| C. | 7 |
| D. | 4 |
| Answer» D. 4 | |
| 122. |
Convert the following octal number to binary.768 |
| A. | 1101112 |
| B. | 1111102 |
| C. | 1111002 |
| D. | 1001112 |
| Answer» C. 1111002 | |
| 123. |
Convert decimal 213 to binary. |
| A. | 11001101 |
| B. | 11010101 |
| C. | 1111001 |
| D. | 11100011 |
| Answer» C. 1111001 | |
| 124. |
A binary number's value changes most drastically when the ________ is changed. |
| A. | MSB |
| B. | frequency |
| C. | LSB |
| D. | duty cycle |
| Answer» B. frequency | |
| 125. |
The decimal number 18 is equal to the binary number ________. |
| A. | 11110 |
| B. | 10001 |
| C. | 10010 |
| D. | 1111000 |
| Answer» D. 1111000 | |
| 126. |
Convert hexadecimal value C1 to binary. |
| A. | 11000001 |
| B. | 1000111 |
| C. | 111000100 |
| D. | 111000001 |
| Answer» B. 1000111 | |
| 127. |
Convert 17318 to decimal. |
| A. | 216.4 |
| B. | 985 |
| C. | 3D9 |
| D. | 1123 |
| Answer» C. 3D9 | |
| 128. |
3C1D16 = 111100000111012 |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» B. | |
| 129. |
Convert hexadecimal C0B to binary. |
| A. | 110000000000 |
| B. | 110000000000 |
| C. | 110000000000 |
| D. | 110100000000 |
| Answer» B. 110000000000 | |
| 130. |
How many binary digits are required to count to 10010? |
| A. | 7 |
| B. | 2 |
| C. | 3 |
| D. | 100 |
| Answer» B. 2 | |
| 131. |
Convert the following decimal number to 8-bit binary.35 |
| A. | 100102 |
| B. | 100112 |
| C. | 1000112 |
| D. | 1000102 |
| Answer» D. 1000102 | |
| 132. |
The two digits in the binary number system are ___ and ___. |
| A. | 1, 2 |
| B. | H, L |
| C. | T, F |
| D. | 0, 1 |
| Answer» E. | |
| 133. |
The 2's complement of a binary number is derived by adding 1 to the 1's complement. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» B. | |
| 134. |
A decimal 11 in BCD is ________. |
| A. | 1011 |
| B. | 1100 |
| C. | 10001 |
| D. | 10010 |
| Answer» D. 10010 | |
| 135. |
The MSB of 11001 is ________. |
| A. | 1 |
| B. | 1100 |
| C. | C |
| D. | 1916 |
| Answer» B. 1100 | |
| 136. |
Convert the following hexadecimal number to decimal.B516 |
| A. | 212 |
| B. | 197 |
| C. | 165 |
| D. | 181 |
| Answer» E. | |
| 137. |
Which is not a word size? |
| A. | 64 |
| B. | 28 |
| C. | 16 |
| D. | 8 |
| Answer» C. 16 | |
| 138. |
Convert the following octal number to decimal. 358 |
| A. | 71 |
| B. | 17 |
| C. | 92 |
| D. | 29 |
| Answer» E. | |
| 139. |
The ________ code represents alphanumeric characters as seven-bit binary numbers. |
| A. | ASCII |
| B. | octal |
| C. | alphanumeric |
| D. | Boy Scout |
| Answer» B. octal | |
| 140. |
Convert the following binary number to decimal. 100110102 |
| A. | 154 |
| B. | 155 |
| C. | 153 |
| D. | 157 |
| Answer» B. 155 | |
| 141. |
The binary number for F3A16 is ________. |
| A. | 111100000000 |
| B. | 111100000000 |
| C. | 111010 |
| D. | 11000100 |
| Answer» B. 111100000000 | |
| 142. |
The binary number 11001110 is equal to the decimal number ________. |
| A. | 12 |
| B. | 206 |
| C. | 127 |
| D. | 66 |
| Answer» C. 127 | |
| 143. |
What is the difference between binary coding and binary-coded decimal? |
| A. | BCD is pure binary. |
| B. | Binary coding has a decimal format. |
| C. | BCD has no decimal format. |
| D. | Binary coding is pure binary. |
| Answer» E. | |
| 144. |
Convert the following decimal number to octal.39 |
| A. | 638 |
| B. | 368 |
| C. | 478 |
| D. | 748 |
| Answer» D. 748 | |
| 145. |
Convert binary 01001110 to decimal. |
| A. | 4E |
| B. | 78 |
| C. | 76 |
| D. | 116 |
| Answer» C. 76 | |
| 146. |
The octal numbering system: |
| A. | simplifies tasks |
| B. | groups binary numbers in groups of 4 |
| C. | saves time |
| D. | simplifies tasks and saves time |
| Answer» E. | |
| 147. |
An informational signal that makes use of binary digits is considered to be: |
| A. | solid state |
| B. | digital |
| C. | analog |
| D. | non-oscillating |
| Answer» C. analog | |
| 148. |
The octal number system consists of eight digits, 0 through 7. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» B. | |
| 149. |
A decimal fraction can be converted to binary by using the repeated division-by-2 method. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 150. |
Convert 73116 to decimal. |
| A. | 216.4 |
| B. | 985 |
| C. | 3D9 |
| D. | 1841 |
| Answer» E. | |