Here are the main functions of an operating system:
1) Manage the resources of the device
The operating system controls how much of each resource is distributed, and it controls things like the processing unit and memory.
2) Establish a interface for the user of the device
The operating system must classify what the classes of the script/code have to do and what they implement.
3) Service application software
The operating system must service each application that is downloaded onto the device. It must balance it's use of storage between apps.
Answer:
B: Use the prototype and revise and enhance the prototype.
Explanation:
Before going ahead to execute any project, one must define the requirements for the project. It is only after the requirements for the project is known that one can go ahead to develop the prototype, use the prototype, revise and then enhance the prototype.
Answer:
A mobile device is loosely defined as a very small device that has some built-in computing or Internet capability.
Explanation:
A mobile device also referred to as a handheld device is a computer device small enough to hold and operate in the hand.
Mobile devices can connect to the Internet and interconnect with other devices such as headsets through Wi-Fi, Bluetooth, cellular networks or near field communication (NFC).
Examples are: Smartphones, Tablets, Calculator
, Digital media player
, Handheld game console
, Laptop
, Mobile Internet Device (MID)
, Personal Digital Assistant (PDA)
, and Pocket calculator
.