Input and Output Devices in Computing

The video tutorial by Professor Marcelo Rios covers input and output devices in computer architecture. It explains how these devices serve as interfaces between humans and machines, providing examples like keyboards, mice, and touchscreens. The tutorial discusses device communication methods, including USB, Bluetooth, and Wi-Fi, and explores device management techniques such as programmed I/O, interrupt-driven I/O, and DMA. The video concludes with practice questions to reinforce learning.

What is the primary function of input and output devices in computer architecture?

• To manage power supply

• To store data

• To facilitate communication between the user and the computer

• To process data

Which of the following is NOT an example of an input device?

• Microphone

• Monitor

• Keyboard

• Mouse

Which device can function as both an input and output device?

• Keyboard

• Mouse

• Multifunction Printer

• Printer

What is the main advantage of USB Type-C over Micro USB?

• Lower power efficiency

• Less compatibility

• Larger size

• Higher data transfer speed

Which technology allows wireless data transfer over short distances?

• Ethernet

• Fiber Optic

• Wi-Fi

• Bluetooth

What is the frequency range used by Bluetooth technology?

• 5 GHz

• 3.6 GHz

• 2.4 GHz

• 1.2 GHz

Which method of managing input and output devices involves the CPU constantly checking each device?

• Interrupt-driven I/O

• DMA

• Direct I/O

• Polling

What is the main disadvantage of polling in managing I/O devices?

• Complex implementation

• High CPU consumption

• Low data transfer speed

• Limited device compatibility

Which method allows data transfer directly between devices and memory without CPU intervention?

• Interrupt-driven I/O

• Polling

• Direct I/O

• DMA

Which of the following is true about DMA?

• It allows direct data transfer between devices and memory

• It requires constant CPU attention

• It is slower than interrupt-driven I/O

• It does not use a controller