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SECTION A : 40 MARKS BAHAGIAN A : 40 MARKAH INSTRUCTION: This section consists of TEN (10) structured questions. Answer ALL questions. ARAHAN: Bahagian ini mengandungi SEPULUH (10) soalan berstruktur. Jawab semua soalan. QUESTION 1 Define a microcontroller and state TWO (2) types of 8-bit data PIC Microchip family product. Takrifkan pengawal mikro dan nyatakan DUA (2) jenis produk 8-bit data bagi famili PIC Microchip. QUESTION 2 What does the term embedded system mean and give TWO (2) examples of embedded system applications? Apakah maksud sistem terbenam dan berikan DUA (2) contoh aplikasi yang melibatkan sistem terbenam? QUESTION 3 Write a program in assembly language to configure PORT A as an input port and PORT B as an output port. Tuliskan aturcara di dalam bahasa penghimpun untuk mengkonfigurasi PORT A sebagai port masukan dan PORT B sebagai port keluaran. 2

SULIT QUESTION 4 What is the difference between the MOVWF and MOVF instructions? Apakah perbezaan di antara arahan MOVWF and MOVF? QUESTION 5 If the clock frequency is 4MHz, calculate the time for one machine cycle. Kirakan masa yang diambil untuk satu kitar mesin, jika frekuensi klok ialah 4 MHz. QUESTION 6 Explain the differences for each instruction below. Terangkan perbezaan setiap arahan berikut. i. MOVLW 0X55 ii. MOVF PORTB,W QUESTION 7 (a) State TWO (2) factors that can affect the delay size. (a) Nyatakan DUA (2) faktor yang boleh menjejaskan saiz delay. [2 marks] (b) Develop a short program that toggles all bits of PORT C. (b) Bangunkan program pendek bagi Toggle semua bit pada PORT C. [2 marks] QUESTION 8 Explain the command RS = 0, RS = 1, R/W = 0 and R/W = 1 for LCD operation. Terangkan arahan RS = 0, RS = 1, R/W = 0 dan R/W = 1 untuk operasi LCD. 3

QUESTION 9 From Figure 1, show which TWO (2) switches to open and TWO (2) switches to close to make the motor running clockwise direction and counter clockwise direction. Dari Rajah 1, tunjukkan DUA (2) suis yang perlu ditutup dan DUA (2) suis yang perlu dibuka untuk motor bergerak secara ikut arah jam dan lawan arah jam. Figure 1 QUESTION 10 List FOUR (4) of the most significant global MCU manufactures other than Microchip. Senaraikan EMPAT (4) pengeluar pengawal mikro selain daripada Microchip. 4

SECTION B : 60 MARKS BAHAGIAN B : 60 MARKAH INSTRUCTION: This section consists of THREE (3) essay questions. Answer ALL questions. ARAHAN: Bahagian ini mengandungi TIGA (3) soalan ESEI. Jawab semua soalan. QUESTION 1 (a) Explain each of the register below: (a) Terangkan setiap daftar di bawah: i. WREG register i. Daftar WREG ii. ii. iii. iii. File Register Daftar Fail Status register Daftar status [3 marks] (b) Show the status of the C, DC and Z flags after the addition of 9CH and 64H in the following instructions. (b) Tunjukkan status bendera C,DC dan Z selepas penambahan 9CH dan 64H dalam arahan berikut. MOVLW 9CH ADDLW 64H ; add 64h to WREG [6 marks] 5

(c) State TWO (2) criteria in choosing microcontroller. (c) Nyatakan DUA (2) kriteria dalam memilih mikropengawal (d) Draw the block diagram of microcontroller unit includes support devices. (d) Lukiskan gambarajah blok unit pengawal mikro beserta dengan perkakasan sokongan. [7 marks] QUESTION 2 (a) With using Assembly Language Programming, write instruction to configure TRIS register to make the PORTE as an input and PORTB as an output. (a) Dengan menggunakan Bahasa Himpunan tuliskan aturcara untuk menetapkan pendaftar TRIS dengan menjadikan PORTE sebagai input dan PORTB sebagai output. (b) Draw a basic microcontroller PI8 circuit including RESET, power supply, input and output circuit. Push Button 1 as an input connected to pin RE0 and LED 1 as an output is connected to pin RB0. (b) Lukiskan asas litar untuk litar pengawal mikro PI8 yang melibatkan litar RESET, bekalan kuasa, input dan output. Push Button 1 adalah sebagai input yang disambungkan ke pin RE0 manakala LED 1 adalah sebagai output yang disambungkan ke pin RB0. [8 marks] 6

(c) Switch 1 is connected to pin RC0 and Switch 2 is connected to pin R as input signal to Microcontroller. LED1 is connected to pin R and LED 2 is connected to R as output signal. (c) Suis 1 disambungkan kepada pin RC0 dan Switch 2 disambungkan kepada pin Rsebagai isyarat masukan kepada microcontroller. LED1 disambung kepada pin R dan LED 2 disambung kepada Rsebagai isyarat keluaran. With using microcontroller PI8, sketch the circuit for the system. Dengan menggunakan pengawal mikro PI8, lakarkan litar untuk sistem ini. [8 marks] QUESTION 3 (a) Define the terms below: (a) Takrifkan yang berikut: i. Interrupt ii. Interrupt service routine (ISR) [4 marks ] (b) Give TWO (2) advantage of interrupt. (b) Berikan DUA (2) kelebihan sampukan. (c) Explain the difference between the interrupt method and the polling method. (c) Terangkan perbezaan antara kaedah sampukan dan kaedah meninjau. 7

(d) Explain why the polling method cannot assign priority? (d) Terangkan kenapa kaedah meninjau tidak boleh menetapkan keutamaan? [3 marks ] (e) Explain the importance of real time application. (e) Terangkan kepentingan aplikasi masa sebenar. [5 marks ] SOALAN TAMAT 8