As the name suggests, these are bonds that pay no coupon or interest. Instead of getting an interest payment, you buy the bond at a discount from the face value of the bond, and you are paid the face amount when the bond matures. For example, you might pay $3,500 to purchase a 20-year zero-coupon bond with a face value of $10,000.
High fidelity (often shortened to hi-fi or hifi) reproduction is a term used by home stereo listeners, audiophiles and home audio enthusiasts to refer to high-quality reproduction of sound to distinguish it from the lower quality sound produced by inexpensive audio equipment, or the inferior quality of sound reproduction that can be heard in ...
The term wi-fi is not a technical term . It is expanded as as wireless fidelity , just like we use the term hi-fi to denote the high fidelity music systems . actually wi-fi is a certification process for wireless inter-operability conducted by a consortium named wi-fi alliance for your 802.11 compatible devices . It means not all your 802.11 wirless equipment are wi-fi certified and hence can not be officially called a wi-fi device .