O-LevelComputer ScienceHardware2210/12 · Oct/Nov 2024 · Q413 Marks
A student has a smartwatch.
- (a)The smartwatch has built-in input and output devices. Identify two input devices that can be built into the smartwatch. 1 2[2]
- (b)Identify one output device that can be built into the smartwatch.[1]
- (c)The smartwatch has read only memory (ROM). Explain why the smartwatch needs ROM.[2]
- (d)(i)The smartwatch uses a text message application that receives data from cloud storage. Describe what is meant by cloud storage.[2]
- (d)(ii)Explain two benefits of the application using cloud storage. 1 2[4]
- (e)The smartwatch only displays the time and text messages. A student incorrectly describes this smartwatch as a general-purpose computer. Explain why the student's description is incorrect.[2]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2024). The mark or mark type is shown in brackets.
- [2] 4(a) Any two from: • Touchscreen • Microphone • Button • (Digital) camera • Sensor // by example
- [1] 4(b) Any one from: • Screen • Speaker • LED • Actuator
- [2] 4(c) Any two from: • To store the BIOS • To store the bootstrap • To help start-up the smart watch // to store start-up instructions • To store the firmware • For non-volatile storage // to store data permanently • To store data/instructions that should not change (unless needed)
- [2] 4(d)(i) Any two from: • A collection of servers • Allows access to data remotely // Stores data in a remote location • Hardware can be owned/managed by a third party • Data storage that is stored/accessed using the internet
- [4] 4(d)(ii) Any four from: • No need to maintain the hardware • the third party is responsible for maintaining the hardware / security of the data • Resources can be increased / decreased (on demand) // Can have unlimited storage capacity • no need to worry about running out of storage space • can save cost of purchase of hardware • Need less/no (secondary) storage space on the watch • watch can remain/is small in size • costs of watch can be kept lower • Can access the data from other/any devices • if the watch breaks/is lost data is still available
- [2] 4(e) Any two from: • The watch can only perform a dedicated/limited functions/tasks • ... and a general purpose computer performs many/multiple functions • (this means that) it is an embedded system • You cannot plug in peripherals • You cannot reprogram the smartwatch // Cannot install other software/apps • It would only have a microprocessor // It would not have a CPU
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