Download Microcomputer Applications Exam (ELTR 7019) - Cork Institute of Technology, 2008/09 and more Exams Microcomputers in PDF only on Docsity!
CORK INSTITUTE OF TECHNOLOGY
INSTITIÚID TEICNEOLAÍOCHTA CHORCAÍ
Semester 1 Examinations 2008/
Module Title: Microcomputer Applications
Module Code: ELTR 7019
School: Electrical and Electronic Engineering
Programme Title: B.Eng. in Electronic Engineering - Award
Programme Code: EELXE_7_Y
External Examiner(s): Mr. D. Deneiffe Dr. P. O’Sullivan Internal Examiner(s): Mr. F. O’Reilly
Instructions: Answer 3 Questions. All questions carry equal marks.
Duration: 2 Hours
Sitting: Winter 2008
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) The following is a set of embedded electronics applications.
- Handheld Remote Control for TV/Video.
- Microwave Oven with digital timer and programmer.
- Nintendo DS (Dual Screen) handheld games machine..
For the each of the applications listed identify, (i) Approximate number of Input & Outputs (iii) Estimate of speed/performance required. (iv) Complexity/Range of algorithms/programmes to execute. [9 marks] From the following micro-controller/microprocessors choices suggest and justify suitable models for each of the above applications. Embedded 8051 IC, Motorola 68000 processor, Intel Pentium 3 low power family, Microchip PIC. (7 marks) [15 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 4800 baud? Calculate the baud rate generator configuration value and show how it would be loaded. [8 marks]
Explain using a diagram how it operates to Transmit data serially or Receive data serially Examine only one case above only, explaining the registers and pins used. [8 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 and provide an example of how a particular key press (no 4) would be determined and identified. You should explain the algorithm to determine which key has been pressed with a flowchart. [18 marks] [Total: 34 marks]
