1) Titanium is the name of a popular laptop computer from Apple that is encased in titanium, the strong but light metal that is used in supersonic aircraft engines. The Titanium PowerBook laptop is also sometimes known as the TiBook because it's a later version of the iBook , an earlier Apple laptop with a G3 processor. The Titanium has an exceptionally wide 15.6 inch display, yet is light at 5.4 pounds. With a 500 MHz and up G4 processor and a one megabyte L-3 cache , the Titanium is aimed especially at users who use graphics applications such as PhotoShop .
2) Titanium is the name of an updated version of Microsoft's Exchange program.