What is the difference between CPU and OS?

CPU is a hardware in your PC and OS is the software. OS is a medium between you and the CPU. When you give some input via input devices, the input is directed to the CPU as per the preassigned commands in the OS.

Is CPU and IO device?

I/O device operates asynchronously with CPU, interrupts CPU when finished. The advantage to this method is that every instruction which can access memory can be used to manipulate an I/O device. Memory mapped IO is used for most high-speed I/O devices like disks, communication interfaces.

What are the different roles of CPU in the three I O operation techniques?

The processor executes a program that gives it direct control of the I/O operation, including sensing device status, sending a read or write command, and transferring the data….I/O Operation

• Control and timing.
• Processor communication.
• Device Communication.
• Data buffering.
• Error detection.

What are the different types of I O devices?

Examples of input/output devices

• CD-R/RW, DVD, and Blu-ray drive.
• Digital camera.
• Fax machine.
• Floppy diskette drive.
• Hard drives.
• Modem.
• NIC (network interface card)
• SD Card.

What is the difference between CPU and GPU?

The main difference between CPU and GPU architecture is that a CPU is designed to handle a wide-range of tasks quickly (as measured by CPU clock speed), but are limited in the concurrency of tasks that can be running. A GPU is designed to quickly render high-resolution images and video concurrently.

Which type of device is a CPU?

The CPU (Central Processing Unit) is the part of a computer system that is commonly referred to as the “brains” of a computer. The CPU is also known as the processor or microprocessor.

What are I O devices and how they are being used?

I/O devices are the pieces of hardware used by a human (or other system) to communicate with a computer. For instance, a keyboard or computer mouse is an input device for a computer, while monitors and printers are output devices.

What are the 3 types of I O?

The responsibility of I/O is to interface with external devices. Depending on their applications, I/O operations can be divided into three groups: sensory input, control output, and data transfer.