Lexical cards

PDA`s=Participatory Development Appraisa(in this case the article talk about of business field)
PDA= Protocol Decode Architecture is the way of how you can store or access to the information
ad-hoc: is a Latin phrase meaning "for this". Is like A priori
hassle-free: you make take hassle-free to mean free of bother or without trouble or inconvenience.
Wireless: is a term used to describe telecommunications in which electromagnetic waves (rather than some form of wire) carry the signal over part or all of the communication path. high-end (h nd )
adj. Informal
1. Appealing to sophisticated and discerning customers: a high-end department store; high-end video equipment.
adj
(Electronics) (prenominal) (esp of computers, electronic equipment, etc.) of the greatest power or sophistication

add-on ( d n , -ôn )
n.
1. One thing added as a supplement to another.
2. Computer Science
a. See add-in.
b. A hardware device, such as an expansion card, that is added to a computer to increase its capabilities.
3. An additional amount or charge.

barcode: A bar code (often seen as a single word, barcode) is the small image of lines (bars) and spaces that is affixed to retail store items, identification cards, and postal mail to identify a particular product number, person, or location. The code uses a sequence of vertical bars and spaces to represent numbers and other symbols.
bar code reader: A barcode reader is used to read the code. The reader uses a laser beam that is sensitive to the reflections from the line and space thickness and variation.
twofold [ˈtuːˌfəʊld]
adj
1. (Mathematics) equal to twice as many or twice as much; double a twofold increase
2. (Mathematics) composed of two parts; dual a twofold reason
In this case first refers to size for example in a better transference
Second refers to the double use of the devices


http://www.thefreedictionary.com/high-end
http://searchmanufacturingerp.techtarget.com/definition/bar-code