PART D
(Answer any two full questions)

12) Explain architecture of Programmable Interrupt Controller in 8259
13) Describe Keyboard Display Controller 8279

14)Explain DMA Controller 8257

Total: (18marks)

PARTE
(Answer any Fourf ull questions)

15) Explain Microcontrollers andTypes of Microcontrollers -with Criteria for electing a

17) Explain Organization and design of these resources in a typical microcontroller in 8051.
microcontroller and Example Applications

16) Explin 8051 architecture in detail

18) Explain 8051 addressing modes in detail

19) Describe different instuction in 8051.
TOTAL (40marks)