Q1. Which of the following is not a function of the Input Unit?
a) It reads instructions and data from the outside world
b) It converts the data into computer acceptable format
c) It makes the data into user understandable format
d) It supplies the data and instructions to the computer for further processing
Answer: b
Explanation: A nibble is defined as a unit of data which comprises of 4 binary digits or half of 8-bit byte. Therefore, 1 nibble = 4 bits. A bit is the smallest unit of data in a computer system. A byte = 8 bits, therefore, half of a byte=4 bits=a nibble.
Explanation: A nibble is defined as a unit of data which comprises of 4 binary digits or half of 8-bit byte. Therefore, 1 nibble = 4 bits. A bit is the smallest unit of data in a computer system. A byte = 8 bits, therefore, half of a byte=4 bits=a nibble.
Q2. Which of the following describes the correct format of an input instruction?
a) IN 82b) INPUT 82
c) INP 82
d) 82 INP
Answer: a
Explanation: The input/output instructions are used to transfer information between external peripherals and the CPU. The correct format of an input instruction is: IN 8-bit port address.
Here, IN 82 is the correct option, where 82 is the designated port address. All the other options are invalid.
Explanation: The input/output instructions are used to transfer information between external peripherals and the CPU. The correct format of an input instruction is: IN 8-bit port address.
Here, IN 82 is the correct option, where 82 is the designated port address. All the other options are invalid.
Q3. The input machine which originated in the United States around 1880s is a ___________
a) Mouse
b) Joystick
c) Keyboard
d) Bar Code Reader
a) Mouse
b) Joystick
c) Keyboard
d) Bar Code Reader
Answer: c
Explanation: A keyboard is an input device which originated in the 1880s and is used to give instructions to the computer in the form of letters and numbers. Mouse is used for the selection of various objects on the screen, joystick is mainly used for gaming purpose and bar code readers are used for reading the bar-codes.
Explanation: A keyboard is an input device which originated in the 1880s and is used to give instructions to the computer in the form of letters and numbers. Mouse is used for the selection of various objects on the screen, joystick is mainly used for gaming purpose and bar code readers are used for reading the bar-codes.
Q4. What does the COMPUTER stand for?
a) Commonly Operated Machines Used in Technical and Educational Research
b) Commonly Occupied Machines Used in Technical and Educational Research
c) Commonly Operated Machines Used in Technical and Environmental Research
d) Commonly Oriented Machines Used in Technical and Educational Research
a) Commonly Operated Machines Used in Technical and Educational Research
b) Commonly Occupied Machines Used in Technical and Educational Research
c) Commonly Operated Machines Used in Technical and Environmental Research
d) Commonly Oriented Machines Used in Technical and Educational Research
Answer: a
Explanation: The word COMPUTER is an abbreviation for the terms “Commonly Operated Machines Used in Technical and Educational Research”. The word COMPUTER also relates to the word COMPUTE which means to calculate. So, initially it was thought that a computer is a device which is used to perform calculations.
Explanation: The word COMPUTER is an abbreviation for the terms “Commonly Operated Machines Used in Technical and Educational Research”. The word COMPUTER also relates to the word COMPUTE which means to calculate. So, initially it was thought that a computer is a device which is used to perform calculations.
Q5. 1 yottabyte = ______________
a) 1024 TB
b) 1024 EB
c) 1024 ZB
d) 1024 PB
a) 1024 TB
b) 1024 EB
c) 1024 ZB
d) 1024 PB
Answer: c
Explanation: 1 yottabyte is equal to 1024 ZB, which stands for zettabyte. Further, 1 ZB=1024 EB (exabyte) and and 1 EB=1024PB (petabyte).
Explanation: 1 yottabyte is equal to 1024 ZB, which stands for zettabyte. Further, 1 ZB=1024 EB (exabyte) and and 1 EB=1024PB (petabyte).
Q6. Which of the following is not a function of the Input Unit?
a) It reads instructions and data from the outside world
b) It converts the data into computer acceptable format
c) It makes the data into user understandable format
d) It supplies the data and instructions to the computer for further processing.
a) It reads instructions and data from the outside world
b) It converts the data into computer acceptable format
c) It makes the data into user understandable format
d) It supplies the data and instructions to the computer for further processing.
Answer: c
Explanation: The input unit converts the data into computer understandable format i.e. binary format and not the user understandable format. It is the duty of the output unit to make the data into user understandable format.
Explanation: The input unit converts the data into computer understandable format i.e. binary format and not the user understandable format. It is the duty of the output unit to make the data into user understandable format.
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