1. Fluctuations of aggregate economic activity. 2.Cycles Expansion/Boom and Contraction/Recession. Peak and Trough: They are the turning Points of the business cycle. 3. Comovements of many macro variables over the business cycle.
Section 5: Using external media: CDs, DVDs and removable USB storage devices. â¢ dvd-r:until about 2005 the most common and portable format; cannot be erased or reused. â¢ dvd-rw:are-writable version of-rformat, similar to cdrw format CD discs.
There are two main types of drives that your computer uses. The first is a hard drive which is used for storage, and the second is an optical drive used to read CDs and DVDs. A DVD-RW drive is an optical drive. On a desktop computer, the DVD-RW drive will normally be located on the front-upper portion of the case. On a laptop computer, the DVD-RW drive will normally be located along the side of the base. DVD-RW