What unit is used to measure the width of the smallest wire on a computer chip?

What unit is used to measure the width of the smallest wire on a computer chip?

• Millimeters
• Angstroms
• Microns
• Hexadecimal 

EXPLANATION

The smallest wire on a chip is measured in microns. Current chips have wires that are less than one micron wide, while a human hair is about 100 microns thick.  

The main chip in a computer is a CPU (the brains of the computer) without the brains, the computer simply cannot load.

 The smallest physical units in my computer are the electron holes in the P-N junctions of the semiconductors: they are so small that they are not even there: it's just an imbalance in the electromagnetic force. If that's not quite the answer you're looking for, then you can go with the diode on the VLSI chip that contains that P-N junction.

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Which of these is not a type of motherboard expansion slot?

Which of these is not a type of motherboard expansion slot?

• PCI
• ISA
• AGP
• ATX 

EXPLANATION

 
ATX is a motherboard configuration specification developed by Intel in 1995 to improve on previous de facto standards like the AT design. It was the first major change in desktop computer enclosure, motherboard and power supply design in many years, improving standardization and interchangeability of parts.

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How can you tell that a ribbon cable should only be used to connect a floppy drive?

How can you tell that a ribbon cable should only be used to connect a floppy drive?

• It has a red line
• It is rainbow colored
• It is white
• It has a twist in it 

EXPLANATION

 The connectors on the ends of the cable are a different size than the connectors for a standard IDE device like a Hard Drive or CD rom. You should also notice that there is a twist in the cable between two of the connectors. 

There are two cables that connect to the floppy drive in a desktop computer.

• There is a four pin power cable
• There is a ribbon cable that has a part twisted end (the twisted end connects to the floppy drive).

 

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What is the name of the type of cable that contains many conducting wires running in the same flat plane?

What is the name of the type of cable that contains many conducting wires running in the same flat plane?

• Optical cable
• Flat cable
• Ribbon cable
• Patch cable 

EXPLANATION

A ribbon cable (also known as multi-wire planar cable) is a cable with many conducting wires running parallel to each other on the same flat plane. As a result the cable is wide and flat.

A ribbon cable (also known as multi-wire planar cable) is a cable with many conducting wires running parallel to each other on the same flat plane. As a result the cable is wide and flat. Its name comes from its resemblance to a piece of ribbon.^[1]
Ribbon cables are usually seen for internal peripherals in computers, such as hard drives, CD drives and floppy drives. On some older computer systems (such as the BBC Micro and Apple II series) they were used for external connections as well. The ribbon-like shape interferes with computer cooling by disrupting airflow within the case and also makes the cables awkward to handle, especially when there are a lot of them; as a result, round cables have almost entirely replaced ribbon cables for external connections and are increasingly being used internally as well.

 
 

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What IRQ does the system timer commonly use?

What IRQ does the system timer commonly use?

• 1
• 10
• 13
• 0 

EXPLANATION

IRQ 0 - System timer. IRQ 1 - Keyboard. IRQ 2 - Cascaded signals from IRQs 8-15. IRQ 3 - COM2 (Default) and COM4 (User) serial ports
IRQ 4 - COM1 (Default) and COM3 (User) serial ports
IRQ 5 - LPT2 Parallel Port 2 or sound card
IRQ 6 - Floppy disk controller
IRQ 7 - LPT1 Parallel Port 1 or sound card (8-bit Sound Blaster and compatibles) IRQ 8 - Real time clock
IRQ 9 - Free / Open interrupt / Available / SCSI. Any devices configured to use IRQ 2 will actually be using IRQ 9.
IRQ 10 - Free
IRQ 11 - Free IRQ 12 - PS/2 connector Mouse. IRQ 13 - ISA / Math Co-Processor
IRQ 14 - Primary IDE. If no Primary IDE this can be changed
IRQ 15 - Secondary IDE These are just a set of standard IRQs. For much more detail check our Ralf Brown's list located at http://www.cs.cmu.edu/~ralf/files.html

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What does BIOS stand for?

What does BIOS stand for?

• Boot Initial Operating System
• Basic Input Output System
• Bootstrap Initial Operating Startup
• Basic Input Output Startup 

 

EXPLANATION

 BIOS is non-volatile firmware used to perform hardware initialization during the booting process, and to provide runtime services for operating systems and programs. The BIOS firmware comes pre-installed on a personal computer's system board, and it is the first software to run when powered on.Wikipedia

BIOS (/ ˈ b aɪ ɒ s / BY-oss; an acronym for Basic Input/Output System and also known as the System BIOS, ROM BIOS or PC BIOS) is non-volatile firmware used to perform hardware initialization during the booting process (power-on startup), and to provide runtime services for operating systems and programs.

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What does FDISK do?

What does FDISK do?

• Performs low-level formatting on the hard drive
• Creates partitions on the hard drive
• Fixes bad sectors on the hard drive
• Recovers lost cluster on the hard drive 

EXPLANATION

For computer file systems, fdisk is a command-line utility that provides disk partitioning functions. In versions of the Windows NT operating system line from Windows 2000 onwards, fdisk is replaced by a more advanced tool called diskpart. Similar utilities exist for Unix-like systems.

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