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Credit cards and smart cards
Credit cards comprise a magnetic stripe on the back made up of iron-based particles in a plastic film.
Stripe is split up into 3 tracks which are read by a magnetic stripe reader. Generally only tracks 1 and 2 are used. Information stored usually follows the below format
(* the optional data often contains a PIN verification code or card verification code)
FACSIMILE : This is often known as 'fax' and it represents the interface between reprographic and computer technology. By using fax, the contents of a sheet of paper (text or illu
Describe the types of flip-flops and latches. Flip-flops are of two types as illustrated below: a. Positive edge triggered b. negative edge triggered Latches are
What is recursion? Recursion: - Recursion is described as a technique of defining a set or a process in terms of itself.
One of these objectives is related to costs. By going e-commerce, consumers will be able to submit their purchase requests to the sellers without paying a visit to their place. Thi
Discuss in detail about Micro computer A microcomputer's CPU is a microprocessor. The microcomputer was originated in late 1970s. The first microcomputer was built around 8-bit
Functions in first-order logic sentences - artificial intelligence: Functions may be thought of as special predicates, where we think of all but 1 of the arguments as input and
A global variable is a variable A global variable is declared outside the body of each function.
Q. Main drawbacks of CD-ROMs? The main drawbacks of CD-ROMs are: It is read only thus can't be updated Access time is longer than that of magnetic disks. Very
What are the uses of interactive reporting? The user can actively control data retrieval and show during the session. Instead of an extensive and detailed list, you make a ba
A Choice is displayed in a compact form that needs you to pull it down to see the list of available choices and only one item may be selected from a choice. A List may be shown in
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