CS609-Midterm
1 / 50
------------ is used to read date from RTC
2 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
3 / 50
BIOS DO NOT support ______.
4 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
5 / 50
Int ________ is used to control the printer via the BIOS.
6 / 50
To store each character in keyboard buffer ____ bytes are required.
7 / 50
To distinguish 486 with Pentium CPUID Test is used.
8 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
9 / 50
The output on the monitor is controlled by a controller called __________within the PC.
10 / 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);
11 / 50
Interrupt service number is usually placed in ____________ register.
12 / 50
In ____________each byte is needed to be encapsulated in start and end.
13 / 50
There are two type of communication synchronous and Anti Synchronous
14 / 50
Operating system name contains ____ bytes in boot block.
15 / 50
LPTs can be swapped.
16 / 50
The Function of I/O controller is to provide ____________.
17 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
18 / 50
DTE is ___________
19 / 50
PPI stands for _____________.
20 / 50
In self test mode the output of the UART is routed to its input.
21 / 50
Following is not a method of I/O
22 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
23 / 50
24 / 50
Keyboard Status Byte is located at the address
25 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
26 / 50
DCE is _____________
27 / 50
File system used in CD’s is_______ file system
28 / 50
Interrupt _____ is empty; we can use its vector as a flag.
29 / 50
Display device (Monitor) performs _________ I/O.
30 / 50
By cascading two DMAs ____ bits can be transferred.
31 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
32 / 50
Only ________ ports are important from programming point of view.
33 / 50
DCE stands for __________.
34 / 50
There are two main types of interrupts namely _________________.
35 / 50
Standard PC can have _____ PPI.
36 / 50
If CPUID instruction is not present then the processor can be a
37 / 50
The ____________ function simply enables the self test facility within the modem control register
38 / 50
The service _________ is called the keyboard hook service.
39 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
40 / 50
______ is Disk interrupt.
41 / 50
Maximum number of interrupts in a standard PC is
42 / 50
DSR stands for __________ .
43 / 50
The keyboard makes use of interrupt number _______ for its input operations.
44 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
45 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
46 / 50
______ is LED control byte.
47 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
48 / 50
PPI stands for
49 / 50
Register can be used to divide frequency is _________
50 / 50
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