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.
CDs and DVDs are not the same format. A CD drive can only read CD discs. A DVD drive can read both DVD and CD discs. Additionally, Blu-Ray movies requires a Blu-Ray drive which can also read DVD and CD discs. #2 - You need a program to play back the DVD movie. I prefer using Media Player Classic (Google it). CD drive can only read CD discs. A DVD drive can read both DVD and CD discs. Additionally, Blu-Ray movies requires a Blu-Ray drive which can also read DVD and CD discs. #2 - You need a program to play back the DVD movie.