CS609-Midterm
1 / 50
The keyboard makes use of interrupt number _______ for its input operations.
2 / 50
BIOS DO NOT support ______.
3 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
4 / 50
DTE is ___________
5 / 50
Only ________ ports are important from programming point of view.
6 / 50
Timer interrupt occurs _______ times every second by means of hardware.
7 / 50
The Function of I/O controller is to provide ____________.
8 / 50
DMA stands for_________
9 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
10 / 50
Standard PC operates in two modes in terms of memory which are
11 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
12 / 50
In self test mode the output of the UART is routed to its input.
13 / 50
There are two main types of interrupts, namely
14 / 50
The interval timer can operate in _______ modes.
15 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
16 / 50
There are __________ kinds of serial communication.
17 / 50
The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .
18 / 50
DTE is ____________.
19 / 50
Keyboard uses port ____ as status port.
20 / 50
______ is used to set time.
21 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
22 / 50
23 / 50
Register can be used to divide frequency is _________
24 / 50
NMI Stand for
25 / 50
Command register is an _____ bit register
26 / 50
File system used in CD’s is_______ file system
27 / 50
Which port is known as Data Port______
28 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
29 / 50
The interval timer can operate in ____modes.
30 / 50
______ is LED control byte.
31 / 50
Counter register can be used to divide clock signal.
32 / 50
BPB stands for _________.
33 / 50
If keyboard buffer is empty the head and tail points at the same location.
34 / 50
------------ is used to set time from RTC
35 / 50
Int 14H____________ can be used to send a byte
36 / 50
37 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
38 / 50
PPI is used to perform parallel communication
39 / 50
Interrupt service number is usually placed in ____________ register.
40 / 50
Int ________ is used to control the printer via the BIOS.
41 / 50
42 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
43 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
44 / 50
Software based flow control make use of -------- control characters
45 / 50
DSR stands for __________ .
46 / 50
Hardware Interrupts are __________.
47 / 50
Display device (Monitor) performs _________ I/O.
48 / 50
__________is used to control the printer via the BIOS
49 / 50
A software interrupt does not require EOI (End of interrupt).
50 / 50
Interrupt _____ is empty; we can use its vector as a flag.
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