Download Autumn 2010/11 - Microcomputer Exam for Electronic Engineering Students and more Exams Microcomputers in PDF only on Docsity!
CORK INSTITUTE OF TECHNOLOGY
INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ
Autumn Examinations 2009/
Module Title: Microcomputer Applications
Module Code: ELTR 7019
School: Electrical and Electronic Engineering
Programme Title: Bachelor of Engineering in Electronic Engineering - Award
Programme Code: EELXE_7_Y
External Examiner(s): Dr. A. Donnellan Dr. P. O’Sullivan Internal Examiner(s): Mr. F. O’Reilly
Instructions: Answer 3 Questions. All questions carry equal marks.
Duration: 2 Hours
Sitting: Autumn 2010
Requirements for this examination:
Note to Candidates: Please check the Programme Title and the Module Title to ensure that you have received the correct examination paper. If in doubt please contact an Invigilator.
Q1 (a) Compare and contrast microprocessors and micro-controllers. What advantages, disadvantages does each have? [8 marks]
(b) For the following applications identify, (i) Approximate number of Input & Outputs (ii) Estimate of speed/performance required. (iii) Complexity/Range of algorithms/programmes to execute. Applications Handheld Remote Control for TV/Video. Microwave Oven with digital timer and programmer. PlayStation Portable (PSP) handheld games console.
From the following micro-controller/microprocessors, suggest suitable models and explain your choice of model for each of the above applications. Embedded 8051 IC, Motorola 68000 processor, Intel Pentium 3 low power family, Microchip PIC. [16 marks]
(c) As a member of an 8-bit micro-processor usage team, you are tasked to devise a scheme to vary the number of special registers from 200 (basic model) to 400(advanced model), while being restricted to using only 8 bits(max of 256) to describe which register is in use. Can you suggest a scheme to do this? Which micro-processors/micro-controller currently use such a technique? [10 marks] [Total: 34 marks]
Q4 (a) What peripheral device is used on the PIC to achieve a Serial Data interface? How would this be configured to give an asynchronous serial interface at 7200 baud? Calculate the baud rate generator configuration value and show how it would be loaded. Explain, naming the registers and pins used, how it can be used to each of the following: Transmit data serially. Receive data serially. [16 marks]
(b) Describe, using diagrams, the principle of how a 16 key-keypad can be read from a micro-controller/micro-processor. How many input/outputs are needed? Provide an example of how a particular key press (no 5) would be determined and identified. You should explain with a flowchart the algorithm to determine which key has been pressed. [18 marks] [Total: 34 marks]
