Online worksheet ยท 4 of 4
What happens between input and output? - Online practice 4
Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.
Read before answering
System model: pretend shop scanner. Input: reading a barcode. Processing: looking up the stored price for that code. Output: the price shown on screen. A device may have several inputs and outputs; this card follows one route. Use the written model, not real private data or changes to a device's settings.
Worksheet preview
- What supplies input to the pretend shop scanner in this model?
- Distinguish the processing and output of this pretend shop scanner.
- Does seeing or hearing the pretend shop scanner output alone prove the result has been saved permanently?
This exercise is included in the free preview. Register free to complete it and download the preview PDFs. No payment is required.
Already registered? Sign in