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Q. What do you understand by Scan Codes?
A scan code is a code produced by a microprocessor in keyboard when a key is pressed and is unique to key struck. When this code is received by computer it reports an interrupt and looks up scan code table in BIOS and realize which keys have been pressed and in what combination. Special memory locations known as status bytes tell the status of locking and toggle keys for example Caps lock etc. Every key press produces two different scan codes - one on key-push down known as Make code and another on its popping back known as Break code. This two-key scheme enables the computer to tell when a key is held pressed down for example ALT key when pressing another key say CTRL-ALT-DEL.
Q. Input - output Devices using Device Controller? A device controller needs not to necessarily control a single device. It can typically control multiple I/O devices. It come
Write the HTML code to accomplish the web page to insert scrollable lists that will always display four entries of the list. The HTML code to accomplish the web page is given b
Enumerate in detail about Image Scanners Drawings, graphs, colour and black-and-white photos, or text can be stored for computer processing with an image scanner by passing an
Why cant datareader be returned from a Web Services Method? Ans) Because datareader is not serializable.
We have multiple instances in RTL (Register Transfer Language), do you do anything special during synthesis stage? Whereas writing RTL(Register Transfer language),say in Verilo
Basic logic gates Introduce the basic logic gates in terms of a) their function, b) their circuit symbol, c) their truth table and d) their equivalent in Boolean a
In what order do the events of an ASPX page execute. As a developer is it important to understand these events? If you try to access it in Page_Load that is way previous th
How does VB.NET/C# achieve polymorphism? VB.Net / C# provide polymorphism through the following mechanisms: 1. Inheritance - base class gives overridable methods which ar
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In assignment you are required extend the Patient class to implement an Inpatient class, representing a patient who is admitted to the hospital for a longer term and who may req
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