CS609-Midterm
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DTE is ____________.
2 / 50
DCE is _____________
3 / 50
Timer interrupt is a _________.
4 / 50
Int 14H____________ can be used to send a byte
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_______ is LED control byte.
6 / 50
The keyboard makes use of interrupt number _______ for its input operations.
7 / 50
Register can be used to divide frequency is _________
8 / 50
NMI Stand for
9 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
10 / 50
PPI is used to perform parallel communication
11 / 50
------------ is used to set time from RTC
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Total No. of bytes that can be stored in Keyboard Buffer is____.
13 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
14 / 50
DTE is ___________
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16 / 50
File system used in CD’s is_______ file system
17 / 50
There are two type of communication synchronous and Anti Synchronous
18 / 50
By cascading two DMAs ____ bits can be transferred.
19 / 50
Interrupt ______ is used to get or set the time.
20 / 50
The following command “outportb (0x61,inportb(0x61) & 0xFC);” will
21 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
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23 / 50
At IRQ 7 Interrupt # ___ is used.
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Only ________ ports are important from programming point of view.
25 / 50
The keyboard input character scan code is received at ___ port.
26 / 50
In self test mode the output of the UART is routed to its input
27 / 50
___________ is used to identify cause of interrupt.
28 / 50
_____ bit is cleared to indicate the low nibble is being sent.
29 / 50
In ____________each byte is needed to be encapsulated in start and end.
30 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
31 / 50
The interval timer can operate in ____modes.
32 / 50
Tail of keyboard should get to get the start of buffer.
33 / 50
DMA stands for_________
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Standard PC can have _____ PPI.
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PPI stands for
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Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
37 / 50
To distinguish 486 with Pentium CPUID Test is used.
38 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
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40 / 50
The interval timer can operate in _______ modes.
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------------ is used to read time from RTC
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There are two main types of interrupts, namely
43 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
44 / 50
Communication between keyboard and keyboard controller is __________.
45 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
46 / 50
Each paragraph in keep function is ____ bytes in size.
47 / 50
Standard PC operates in two modes in terms of memory which are
48 / 50
If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
49 / 50
If keyboard buffer is empty the head and tail points at the same location.
50 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
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