Frederick prints a document that he has typed. The printer begins to print the document, but then a message is displayed on Frederick's computer to say that the paper has jammed. (a) Describe the role of an interrupt in generating a message on the computer that the paper has jammed. \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ [4] (b) Give two other examples of when an interrupt signal could be generated. 1 \_\_\_\_ 2 \_\_\_\_ (c) The type of data transmission between the computer and the printer is serial half-duplex data transmission. (i) Describe how data is transmitted using serial half-duplex data transmission. \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ [4] (ii) Explain why the data transmission needs to be half-duplex rather than simplex. \_\_\_\_ \_\_\_\_ \_\_\_\_ \_\_\_\_ [2]

2021 - O/N - 0478/13 | Q4

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Frederick prints a document that he has typed. The printe...