Where does computer store instructions?

At the core of the computer is the central processing unit or CPU, the source of control that runs all programs and instructions. In order to function, computers use two types of memory: primary and secondary. The main storage is the primary memory, and data and programs are stored in secondary memory.

Just so, where are the instructions stored that the computer needs when it starts up?

The startup instructions stored on ROM in a PC are part of the BIOS (Basic Input Output System). The BIOS also contains the low-level interface code needed to access the drives, keyboard, and produce simple display output.

Secondly, what is the largest storage space on a computer? Hard Drive Platter Closeup Researchers at IBM's Almaden, California research lab are building what will be the world's largest data array--a monstrous repository of 200,000 individual hard drives all interlaced. All together, it has a storage capacity of 120 petabytes, or 120 million gigabytes.

Also question is, where does the computer store instructions and data that are used most often by the CPU?

Whether it comes from permanent storage (the hard drive) or input (the keyboard), most data goes in random access memory (RAM) first. The CPU then stores pieces of data it will need to access, often in a cache, and maintains certain special instructions in the register.

Which is an example of portable storage?

In the computer world, portable storage devices include flash drives, USB drives (thumb drives), external hard drives (sometimes called mini hard drives), and portable CD/DVD-ROM drives. Some are externally-powered, but many draw power from USB.

Related Question Answers

What contents are erased when the computer is turned off?

RAM as a Volatile Memory RAM is volatile memory, meaning that it only stores data while the power is switched on. When the computer is turned off, the data in RAM gets automatically erased.

What is a nonvolatile storage device?

Non-volatile storage (NVS) is a broad collection of technologies and devices that do not require a continuous power supply to retain data or program code persistently on a short- or long-term basis. NOR flash memory chips commonly store controller code in storage drives and personal electronic devices.

What are the main components of a motherboard?

The important components of a Motherboard are given below:

• Mouse & keyboard : There are two types of keyboard and mouse connectors.
• USB (Universal serial bus) : USB is Universal serial bus.
• Parallel port :
• CPU Chip :
• RAM slots :
• Floppy controller :
• IDE controller :
• PCI slot :

Is CPU a port?

What are the ports of CPU? - Quora. A port is a physical docking point using which an external device can be connected to the computer. It can also be programmatic docking point through which information flows from a program to the computer or over the Internet.

What is expansion card in computer?

Alternatively referred to as an add-on card, expansion board, internal card, interface adapter, or card, an expansion card is a PCB that fits into an expansion slot on a desktop computer. An expansion card is used to give a computer additional capabilities, such as enhanced video performance via a graphics card.

What is the purpose of cache memory?

The basic purpose of cache memory is to store program instructions that are frequently re-referenced by software during operation. Fast access to these instructions increases the overall speed of the software program.

What is the brains of the computer?

The computer brain is a microprocessor called the central processing unit (CPU). The CPU is a chip containing millions of tiny transistors. It's the CPU's job to perform the calculations necessary to make the computer work -- the transistors in the CPU manipulate the data.

What is the CPU covered by?

The CPU fits into the motherboard's CPU socket, which is covered by the heat sink, an object that absorbs heat from the CPU. A processor's speed is measured in megahertz (MHz), or millions of instructions per second; and gigahertz (GHz), or billions of instructions per second.

What is the main circuit board of the computer?

The main circuit board of a modern computer is called a motherboard. Its main function is to act as the seat for the Central Computing Unit (CPU) Random Access Memory (RAM) and ports for other peripherals such as Hard Drive (HDD), Keyboard and Mouse and Display ports for the Monitor.

What card has its own RAM?

A dedicated graphics card has its own RAM and Processor for generating its images, and does not slow down the computer.

Which of the following functions of a computer is mostly responsible for turning data into info?

To function, a computer system requires four main aspects of data handling: input, processing, output, and storage. The hardware responsible for these four areas operates as follows: Input devices accept data in a form that the computer can use; they then send the data to the processing unit.

Which of the following optical storage media has the greatest storage capacity quizlet?

A Blu-ray disc has the greatest storage capacity of optical media. A single-sided Blu-ray disc holds up to 25 GB of data.

Which portable storage device has the largest storage capacity?

As of 2012, commercial tape drives have the greatest capacity, although these are used for backups only. For most other applications, hard drives take the storage crown, with other technologies rapidly closing the gap.

What is meant by cache memory?

Cache memory is an extremely fast memory type that acts as a buffer between RAM and the CPU. It holds frequently requested data and instructions so that they are immediately available to the CPU when needed. Cache memory is used to reduce the average time to access data from the Main memory.

Why do people use portable storage device?

Portable data storage can be defined as a device that stores digital information. The portable devices can store large amount of data at a much faster rate. The high data stability of portable devices enable enterprises to rely on the portable devices while sharing large volume of data.

Is hard disk a portable storage device?

A portable storage device (PSD) is a small hard drive designed to hold any kind of digital data. This is slightly different from a portable media player, which stores and plays music and movies. Some are fixed size hard drives of 256GB, 320GB, etc.

What is the best type of storage device for data?

Top 5 Best Hard Drives Review

1. Optical Storage Devices. The oldest available storage device, this optical storage device are pretty plenty in capacity and clearly portable.
2. USB Flash Drive.
3. Memory Card.
4. Hard Drive Box (HDD Box)
5. Solid State Drive (SSD)

Which storage device is considered a portable device?

In the computer world, portable storage devices include flash drives, USB drives (thumb drives), external hard drives (sometimes called mini hard drives), and portable CD/DVD-ROM drives.

Which is not portable storage device?

Hard disk drive is not a portable storage device because it is already stored in the system but external hard drive is a portable storage device because we use it from outside source and it is not already installed in the computer.

What are the different types of portable computers?

Different Types of Portable Computers and Their Specifics

• Before you start. Objectives: learn about different types of portable computers, about their specific design, typical expansion slots that they use, different types of batteries that are used, about power management, and typical ports.
• Processor.
• Memory.
• Keyboard.
• Pointing Device.
• Video.
• Networking.
• Long Term Storage.

What are portable and fixed storage devices?

Portable & Fixed Drives. A Fixed Drive is a non-volatile storage device for digital data and it is built into the system. A portable drive is a small hard drive made to save many kind of digital data and it doesn't stay in the system you can take it out at any time.

What is storage device name any three portable storage device?

In the computer world, portable storage devices include flash drives, USB drives (thumb drives), external hard drives (sometimes called mini hard drives), and portable CD/DVD-ROM drives.

What are the different types of storage devices?

There are two types of storage devices used with computers: a primary storage device, such as RAM, and a secondary storage device, such as a hard drive. Secondary storage can be removable, internal, or external.

Optical storage devices

• Blu-ray disc.
• CD-ROM disc.
• CD-R and CD-RW disc.
• DVD-R, DVD+R, DVD-RW, and DVD+RW disc.