Input, process, output and storage

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Quick Questions

Shade in the A or B circle for each question.

1. Which stage of a digital system takes in data from the user?

A Output

B Input

2. A student types a number into a calculator app. The calculator adds it to another number. Which stage is the adding?

A Process

B Store

3. Which stage keeps data so it can be used again later?

A Store

B Input

4. Which is an example of the output stage?

A A microphone records your voice

B A printer prints a photo

5. A digital system is made of input, process, store and output.

A True: every digital system takes in data, processes it, stores it and outputs a result

B False: only computers with a screen use these stages

Match the Pairs

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

Left column		Right column
1input		ATyping sends data into the system, so it is input, not output. Output is what the system shows back.
2process		Bstore
3A digital system keeps data so it can be used again later		Coutput
4A digital system shows the result of its work to the user, such as a picture on a screen		DData going into a digital system, such as a key press or a tap on a screen
5Typing on a keyboard is output		EThe system works on the data, such as adding up numbers or sorting a list
6input -> output -> process -> store		FThe stages are in the wrong order. Data must be processed before the result is output.

Definitions

input, process, store, output

Fill in the Blanks

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

Typing on a keyboard is the _____ stage

The CPU does the _______ stage

Saving a file to a disk is the _____ stage

Showing a result on a screen is ______

Task: play a song Store: song file on the phone Output: _______

Spot the Error

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

Question 1

A name = input('Name? ')

B greeting = 'Hi ' - name

C print(greeting)

Question 2

A a = int(print('First? '))

B b = int(input('Second? '))

C total = a + b

D print(total)

Question 3

A score = 10

B file = open('score.txt', 'r')

C file.write(str(score))

D file.close()

Question 4

A temp = int(input('Temp? '))

B if temp > 25:

C print(Hot)

D else:

E print('Cool')

Question 5

A OUTPUT: scan barcode

B PROCESS: look up the price

C STORE: save sale in database

D OUTPUT: show price on screen

Answer Key

Input, process, output and storage

Section A: Quick Questions

B — Input

A — Process

A — Store

B — A printer prints a photo

A — True: every digital system takes in data, processes it, stores it and outputs a result

Section B: Match the Pairs

input → Data going into a digital system, such as a key press or a tap on a screen

process → The system works on the data, such as adding up numbers or sorting a list

A digital system keeps data so it can be used again later → store

A digital system shows the result of its work to the user, such as a picture on a screen → output

Typing on a keyboard is output → Typing sends data into the system, so it is input, not output. Output is what the system shows back.

input -> output -> process -> store → The stages are in the wrong order. Data must be processed before the result is output.

Section C: Definitions

input, process, store, output — A digital system takes in data (input), works on it (process), keeps it (store) and shows a result (output).

Section D: Fill in the Blanks

Typing on a keyboard is the input stage

The CPU does the process stage

Saving a file to a disk is the store stage

Showing a result on a screen is output

Task: play a song
Store: song file on the phone
Output: speaker

Section E: Spot the Error

B — The process stage joins the text together. Strings are joined with +, not -. It should be greeting = 'Hi ' + name.

A — Taking data in is the input stage, which needs input(). print() is an output command. It should be a = int(input('First? ')).

B — The storage stage saves data to a file, so the file must be opened in write mode 'w'. Mode 'r' only reads. It should be open('score.txt', 'w').

C — The output text must be in quotes. Without them Python looks for a variable called Hot. It should be print('Hot').

A — Scanning a barcode takes data in, so it is the input stage, not output. Line 1 should start with INPUT.