CS609-Midterm
1 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
2 / 50
______ is used to set time.
3 / 50
Display device (Monitor) performs _________ I/O.
4 / 50
Control information in files is maintained using
5 / 50
If CPUID instruction is not present then the processor can be a
6 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
7 / 50
DSR stands for __________ .
8 / 50
DMA stands for_________
9 / 50
In keyboard status byte bit no. 2 and 3 are used for ctrl and alt keys respectively. which of the following condition is used to check that Ctrl + Alt keys are pressed. Where: unsigned char far * scr = (unsigned char far *)(0x00400017);
10 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
11 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
12 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
13 / 50
_________ is used to identify the cause of interrupt.
14 / 50
The keyboard makes use of interrupt number _______ for its input operations.
15 / 50
DCE stands for __________.
16 / 50
File can be______ viewed as collection of clusters or blocks.
17 / 50
Register can be used to divide frequency is _________
18 / 50
The output on the monitor is controlled by a controller called __________within the PC.
19 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
20 / 50
21 / 50
To distinguish 486 with Pentium CPUID Test is used.
22 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
23 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
24 / 50
File system used in CD’s is_______ file system
25 / 50
BIOS DO NOT support ______.
26 / 50
DCE is _____________
27 / 50
BIOS support _____________UARTS as COM ports.
28 / 50
Counter register can be used to divide clock signal.
29 / 50
If keyboard buffer is empty the head and tail points at the same location.
30 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
31 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
32 / 50
DTE is ____________.
33 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
34 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
35 / 50
------------ is used to set time from RTC
36 / 50
Standard PC operates in two modes in terms of memory which are
37 / 50
In self test mode the output of the UART is routed to its input.
38 / 50
In self test mode the output of the UART is routed to its input
39 / 50
LPTs can be swapped.
40 / 50
_____ bit is cleared to indicate the low nibble is being sent.
41 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
42 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
43 / 50
There are __________ kinds of serial communication.
44 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
45 / 50
46 / 50
DTE is ___________
47 / 50
The interval timer can operate in ____modes.
48 / 50
Maximum number of interrupts in a standard PC is
49 / 50
50 / 50
A software interrupt does not require EOI (End of interrupt).
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