G.NARAYANAMMA INSTITUTE OF TECHNOLOGY & SCIENCE

(FOR WOMEN)

SHAIKPET, HYDERABAD – 8

III / IV - B.TECH II SEMESTER V QUIZ – EXAMINATION

SUBJECT: MPMC Regd.No:________

BRANCH: ECE –1 & 2 Max.Marks: 20

Time: 20 Mins

1. Describe the 8051 Instruction Format indicating the fields clearly. …….2M

2. Describe the Programmable Peripheral Interface (8255) control word …2M

3. Given PA & PB are inputs , PCH & PCL are outputs and the mode of operation is 0 _________________ is the control word to be used. ….2M

4. Given that the CS pin is given address 2800h, the A0 ,A1 pins are at 0 & 1 respectively then the _______________ port is addressed. …..1M

5. The PPI (8255) port bits are ______ directional …… 1M

6. The PPI (8255) has ______ ports …… 1M

7. The PPI (8255) has ______ registers …… 1M

8. The data transfer between XRAM and CODE is _______ possible………1M

9. The method of accessing a table of addresses to decide the transfer of control is called __________________ ___________ __________________ …1M

10. The JMP @A + DPTR is an _________ _____________ instruction.. …1M

11. The IC used by microprocessors & Microcontrollers to find the actual time is called the ________ ______________ ________________ chip …..1M

12. One of the important applications of microcontrollers in the police dept. is the _______________ ________________ ________________ …..1M

13. One more application in the Building construction Industry is _____________ _____________ …..1M

14. The 8051 has no _________________ serial communication …..1M

15. The 8051 has _____________ serial communication modes …..1M

16. The 8051 has register named _______ for receiving and transmitting data…1M

17. The receive & transmit interrupt bits RI & TI are available in ________ …1M

BOLCRS