What the universal serial bus (USB) is

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Quick Questions

Shade in the A or B circle for each question.

1. What does the abbreviation USB stand for?

A Universal Speed Boost

B Universal Serial Bus

2. Which statement best describes USB?

A A standard interface for connecting devices to a computer and transferring data

B A program that protects a computer from viruses

3. Which of these devices can connect to a computer using USB?

A A keyboard

B None of them, because USB only works with memory sticks

4. Why is USB called a 'universal' standard?

A Many different types of device from many makers can use the same standard

B It can only be used with one brand of computer

5. What is the main job of USB?

A To store all of a computer's files permanently

B To connect a device to a computer and transfer data between them

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
1USB		Akeyboard, flash drive, phone -> USB port
2Universal Serial Bus		BThis is wrong because USB is a single standard shared by many devices such as keyboards, drives and phones.
3USB is a standard interface, so many different peripherals can connect to a computer in the same way		Cphone <-> USB <-> computer
4USB lets a connected device transfer data to and from a computer		DUniversal Serial Bus: a standard interface for connecting devices to a computer and transferring data between them
5USB = Universal Switching Bus		EThe full name of USB, a standard shared by many different devices
6Each device type needs its own different standard instead of USB		FThe name is wrong. USB stands for Universal Serial Bus, not Universal Switching Bus.

Definitions

USB

Fill in the Blanks

Complete each line of code by filling in the missing parts.

CONNECT keyboard TO computer VIA ___

// USB = Universal ______ Bus

// USB is a ________ used by many devices

CONNECT phone TO ________ VIA USB

// USB is an _________ between device and PC

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A USB = 'Universal Serial Bus'

B type = 'wireless network'

C use = 'connect peripherals'

Question 2

A device = 'keyboard'

B interface = 'USB'

C connect(device, 'HDMI')

Question 3

A devices = ['keyboard', 'CPU']

B devices.append('phone')

C connect_all(devices, USB)

Question 4

A standard ← USB

B devices ← [mouse, phone]

C FOR EACH d IN standard

D CONNECT d USING standard

Question 5

A OUTPUT 'USB stands for'

B OUTPUT 'Universal Series Bus'

C OUTPUT 'standard interface'

Answer Key

What the universal serial bus (USB) is

Section A: Quick Questions

B — Universal Serial Bus

A — A standard interface for connecting devices to a computer and transferring data

A — A keyboard

A — Many different types of device from many makers can use the same standard

B — To connect a device to a computer and transfer data between them

Section B: Match the Pairs

USB → Universal Serial Bus: a standard interface for connecting devices to a computer and transferring data between them

Universal Serial Bus → The full name of USB, a standard shared by many different devices

USB is a standard interface, so many different peripherals can connect to a computer in the same way → keyboard, flash drive, phone -> USB port

USB lets a connected device transfer data to and from a computer → phone <-> USB <-> computer

USB = Universal Switching Bus → The name is wrong. USB stands for Universal Serial Bus, not Universal Switching Bus.

Each device type needs its own different standard instead of USB → This is wrong because USB is a single standard shared by many devices such as keyboards, drives and phones.

Section C: Definitions

USB — Universal Serial Bus: a standard interface for connecting devices like keyboards, drives and phones to a computer and transferring data between them.

Section D: Fill in the Blanks

CONNECT keyboard TO computer VIA USB

// USB = Universal Serial Bus

// USB is a standard used by many devices

CONNECT phone TO computer VIA USB

// USB is an interface between device and PC

Section E: Spot the Error

B — USB is a standard interface for connecting devices to a computer, not a wireless network. Line 2 should be type = 'standard interface'.

C — The program sets the interface to USB, so the keyboard should connect using the variable interface (USB). HDMI is mainly for video.

A — A keyboard and a drive are peripherals that connect by USB. The CPU is inside the computer, so it is not a USB device. Line 1 should list 'drive'.

C — The loop must go through each device in the devices list and connect it using the USB standard. It should be FOR EACH d IN devices.

B — USB stands for Universal Serial Bus. 'Serial' is the correct word, not 'Series'.