Basic IT

Option: C
Explanation :Marcian Edward “Ted” Hoff Jr. (born October 28, 1937 in Rochester, New York) is one of the inventors of the microprocessor.

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Option: A
Explanation :No explanation is available for this question. To view user comments or add your comments please Click Here..

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Option: B
Explanation :The IR which stands for the instruction register contains the last instruction fetched.
The instruction register (IR) or current instruction register (CIR) is the part of a CPU’s control unit that holds the instruction currently being executed or decoded.
An instruction register holds a machine instruction that is currently being executed. In general, a register sits at the top of the memory hierarchy. A variety of registers serve different functions in a central processing unit (CPU) – the function of the instruction register is to hold that currently queued instruction for use.
All the others options are registers which are used for the fetch operation.

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Option: D
Explanation :A graphics drawing tablet used for sketching new images or tracing old ones. Also called a “graphics tablet,” the user contacts the surface of the device with a wired or wireless pen or puck. Often mistakenly called a mouse, the puck is officially the “tablet cursor.”

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Option: A
Explanation :Peopleware can refer to anything that has to do with the role of people in the development or use of computer software and hardware systems, including such issues as developer productivity, teamwork, group dynamics, the psychology of programming, project management, organizational factors, human interface design, and human-machine-interaction.

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Option: C
Explanation :The laser (Light Amplification by Stimulated Emission of Radiation) emits a beam of coherent, monochromatic directed light. Theodore H. Maiman built first laser in 1960. There are many applications for laser technology like in optical disk, surgery and skin treatments laser printers, laser Spectroscopy, barcode scanners, fiber-optic, etc..

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Option: C
Explanation :The IMEI (International Mobile Equipment Identity) number is a unique set of 15 digits used on GSM phones to identify them. Because the SIM card is associated with the user and can be swapped from phone to phone, a method is needed to keep track of the hardware itself, and that’s why the IMEI was developed. The first 14 digits are decided by the GSM association, and the final check digit is computed using what’s called the Luhn Formula — crazy base-8 math that mere mortals like most of us don’t understand, nor want to understand.

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