PPSC Computer Science Full Book test With Answers

PPSC Computer Science Full Book test

Sr. # Questions Answers Choice
1 Which multiplex by ADC 0808/0809 2:4 3:8 4:16 None
2 Which chip is used for analogue to digital converter. 0809 0808 Both a and b None
3 The time taken by the ADC from the active edge of SOC pulse till the active edge of EOC signal is called. Conversion over Conversion delay Conversion signal None
4 Which chip used for AD & DA converters in 8086 processor. 8251 8255 8254 8259
5 34 H& AX which operation is performed here Input Output Progress None
6 AL 7 99H which operation is performed here Input Out put Both a and b None
7 Which are used for port A in 8255 mode 1. PC0-PC2 PC3-PC7 PC6-PC7 PC3-PC5
8 Which are used for port B in 8255 CPO-PC2 PC3-PC7 PC6-PC7 PC3-CP5
9 Which mode is used to double handshakes in 8255 Mode 0 Mode 1 Mode 2 Mode 3
10 Which mode is used for single handshake in 8255 Mode 0 Mode 1 Mode 2 None
11 Which is designed is automatically manage the handshake operation. 8251 8254 8255 8259
12 The processer of knowing the status of device and transferring the data with matching speeds is called. Handshaking Peripheral Ports None
13 Which are used DMA controllers with 8085/8086 microprocessor. 8237 8357 Both a and b None
14 Which is widely used in interrupt controller with a number of microprocessor. 8251 8254 8255 8259
15 Which programmable timer is used to generate timing signal 8255 8254 8251 8259
16 Which is a programmable communication interface. 8255 8254 8251 8359
17 Which is the commonly used programmable interface and particular used to provide handshaking. 8251 8354 8459 8255
18 DAC stand for Analogue to analogue converters Analogue to digital converters Digital to digital converters Digital to analogue converters
19 MEMER and MEMW means Memory read Memory write Both a and b None
20 AEN stand for Address enable Address equivalent Acknowledgment enable Acknowledgment equivalent
21 HR stand for. Hold request Hold read Hold register Hold resolver
22 HLDA stand for High acknowledgment Hold acknowledgement High access Hold access
23 OCW stand for Operational command words Operational conjunction words Operational control words Operational cost words
24 ICW stand for interrupt command words Interrupt command write Initialization command words Initialization command write
25 RD stand for Read Register Request Real
26 INTA stand for Interrupt acknowledge Interrupt access Interrupt address None
27 INT stand for Input Interrupt Both a and b None
28 IMR stand for Input mask register Input mask resolver Interrupt mask resolver Interrupt mask register
29 PR stand for Priority register Priority resolver Priority request None
30 ISR stand for Interrupt service register Input service register In service register All of these
Download This Set

Is this page helpful?