Hardware | MCQs

Explanation

An arithmetic-logic unit (ALU) is the part of a computer processor (CPU) that carries out arithmetic and logic operations on the operands in computer instruction words.

Explanation

Parts from four early computers, 1962. From left to right: ENIAC board, EDVAC board, ORDVAC board, and BRLESC-I board, showing the trend toward miniaturization. The first aids to computation were purely mechanical devices which required the operator to set up the initial values of an elementary arithmetic operation, then manipulate the device to obtain the result. Later, computers represented numbers in a continuous form (e.g. distance along a scale, rotation of a shaft, or a voltage). Numbers could also be represented in the form of digits, automatically manipulated by a mechanism. Although this approach generally required more complex mechanisms, it greatly increased the precision of results. The development of transistor technology and then the integrated circuit chip led to a series of breakthroughs, starting with transistor computers and then integrated circuit computers, causing digital computers to largely replace analog computers. Metal-oxide-semiconductor (MOS) large-scale integration (LSI) then enabled semiconductor memory and the microprocessor, leading to another key breakthrough, the miniaturized personal computer (PC), in the 1970s. The cost of computers gradually became so low that personal computers by the 1990s, and then mobile computers (smartphones and tablets) in the 2000s, became ubiquitous

Explanation

Hardware refers to the physical components of a computer system, like the keyboard, mouse, CPU, and monitor.

It contrasts with software, which refers to programs and logic.

Explanation

A printer driver is a piece of system software that allows your computer to interact with your printer.

Explanation

کمپیوٹر ایک برقیاتی آلہ جو حساب کے سوال اور پیچیدہ شماریاتی مسئلے، مقررہ اور پروگرامی ہدایات کے مطابق ،آسانی سے حل کر لیتا ہے.

Explanation

Keyboard is not software.

It is a hardware input device.

It is used to interact with a computer.

Explanation

Modern computers are primarily based on transistor technology. 

And old computers are based on vacuum tube

John Vincent Atanasoff invented the first digital computer in 1930. 

Charles Babbage is known as the Father of the Computer.

Explanation

Beeps or failure to boot can indicate a hardware or firmware issue, which is typically reported by the BIOS (Basic Input/Output System) or UEFI (Unified Extensible Firmware Interface) firmware during the boot process.

Explanation

• A microcontroller at least consists of a processor as its CPU with RAM, ROM, I/O ports and timers.
• It may contain some additional peripherals like ADC, PWM, etc.

Explanation

A Firewall is a piece of hardware or software that reads all data packets in a network and blocks or allows them based on predetermined security rules.

It acts as a barrier between a trusted network and an untrusted network, such as the internet.