First announced in January 2006. First portable Mac to use Intel Processors (Dual Core).
January 10, 2006. First 15 inch, then 17 inch. Mac OS X Leopard. Similar to PowerBook G4. MagSafe used for the first time. October: Intel Core Duo was included. 2008: LED backlights were addes and memory capacity increased.
-Announced in October - Battery lasted five 14,2008. hours. Removable- Ports were moved to the Battery. left side and optical disc - Unibody was similar drive slot was moved to iMac and MacBook from the front to the right side, like the Air but thinner than MacBook. PowerBook G4.- Included new Video - Inertial scrolling was Card: Nvidia GeForce added. 9600M GT with 256 to 512MB.
Introduced in June, 2012. Apple named it as "MacBook Pro with Retina display." Includes Intel Core i7. Thinner MagSafe Port. Improves speakers and microphones. Better cooling system. Memory has to be chosen at the time of purchase and cant be upgraded. Battery is glued and if its attempted to be removes it may destroy the battery.
More secure. Virus and malwares are mostly designed for Windows more than any OS. Apple creates the OS and the Hardware. They are simple and elegant. Comes with useful software.
Its only secure because a few people uses them but as they get more popular, virus will be designed for Mac. Cant be upgraded. They are really expensive. Many software are not available for Mac but for Windows.