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Near field communication (NFC) is a set of standards for smartphones and similar devices to establish radio communication with each other by touching them together or bringing them into close proximity, usually no more than a few centimeters. Present and anticipated applications include contactless transactions, data exchange.

NFC transfer has been done in 2 stages. File transfer is only initiated via NFC, then the devices handover the connection to Bluetooth to transfer the data. The…

 Testing Approach in waterfall model

The first phase in waterfall model is the requirements phase in which all the project requirements are completely defined before starting the testing. During this phase, the test team brainstorms the scope of testing, test strategy and drafts a detailed test plan. Only once the design of software is complete, the team will move on to execution of the test cases to ensure that the developed software behaves as it expected. In this methodology, the…

1.How easy is it for users to accomplish basic tasks the first time they encounter the design?

2.How fast can experienced users accomplish tasks?

3.When users return to the design after a period of not using it, does the user remember enough to use it effectively the next time, or does the user have to start over again learning everything?

4.How many errors do users make, how severe are these errors and how easily can they recover from the errors?

5.How much does the user…

1. Simulator: Suppose you have written assembly program in a file and corresponding exe file is ready. The simulator is the pc software which reads the instructions from the exe and 'minmics' the operation of the processor. Basically a simulator tests the program on the development processor. A simulator is software that duplicates some processor in almost all the possible ways.

2. Emulator: Emulator is a (PC software + a processor). The Processor can be plugged into the TARGET BOARD…