Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Device Drivers in UNIX, MS-DOS and Windows System
Though device drivers are in effect add-on modules they are however considered to be part of system because they are closely integrated with I/O Control System that deals with I/O related system calls.
In UNIX device drivers are typically linked onto object code of kernel (core of operating system). This means that when a new device is to be used that was not included in original construction of operating system, UNIX kernel has to be re-linked with new device driver object code. This scheme has advantages of run-time efficiency and simplicity however the shortcoming is the addition of a new device needs regeneration of the kernel. In UNIX every entry in /dev directory is associated with a device driver that manages communication with the related device. A list of few device names is as displayed below:
Device name Description
/dev/console system console
/dev/tty01 user terminal 1
/dev/tty02 user terminal 2
/dev/lp line printer
/dev/dsk/f03h 1.44 MB floppy drive
Conversioin of the decimal number 82.67 into Octal number ? Ans. The binary equivalent is (1010010.10101011) 2 of decimal number 82.67. After that convert each 3-bit binary in
Q. What is the draw back of Access-3 Code? Give suggestion to over come this drawback.
You can select and move a layout table to other areas in a particular document. You can't, though, move a layout table so that it overlaps another. Next you will move the table
Q. Illustrate what is the universal law of universal gravitation? Answer:- Declaration that any particle of matter in the universe attracts any other with a force varying
What are primary keys and foreign keys? Primary keys are the unique identifiers for every row. They must have unique values and cannot be null. Due to their significance in rel
Explain the term- Scan Insertion Scan Insertion is completed by a tool and results in all (or most) of your design's flip-flops to be changed by special "Scan Flip-flops". Sca
Define the component of a process precedence sequence? Ans. Process name, sequence operator and also concurrency operator components are process precedence sequence.
1) Discuss various types of persuasive communication you might be needed to write or present in your professional and personal life. 2) Describe two ways to organize a resume
Problem a) Distributed network architecture is whereby services are executed and distributed among various computers. Give two advantages and two disadvantages of the distrib
How is the connectivity established in Verilog when connecting wires of different widths? When connecting wires or ports of different widths, connections are right-justified, S
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd