Welcome to PlayStation Portable!
The PlayStation Portable (PSP) is the first portable console to have an analog stick built into it. It is also the first handheld system to use game disks instead of game packs; such as the Nintendo DS, GameBoy, ect. The PSP has better graphics than the Nintendo DS, but the battery only lasts a few hours. The PSP game disks can hold more data than game packs, but they take a lot longer to load. The PSP has a memory stick to hold the game's data. It can also wirelessly connect to the internet and put music, videos, pictures, almost anything onto the memory stick.
The PSP console
This is the PSP Slim or PSP-2000. It has an increased RAM from the PSP-1000; as the 1000's RAM was 32 MB, the PSP-2000's RAM is 64 MB.
This is the game disc for the PSP. It is called a UMD which is short for Universal Media Disc.
This is the PSP-3001 system. The main differences between this and the PSP-2000 are: Glare-resistat screen, thinner ring around the PSP logo on the back, oval-shaped buttons on the front compared to semi-circular buttons like on the earlier modeles, and a built in microphone. Like I said, those are the MAIN important changes. You can scoll up and down between the two systems and see additional changes yourself.
Of Course, this is the PSP Go!. This is called the N1000 model instead of PSP-4000. The PSP Go! was released on October 1st, 2009. The PSP Go! is 16% lighter and 35% smaller than the slim PSP's. The PSP Go! can slide open and shut, and when it's shut, it will display the time. There is no UMD drive on the PSP Go! but it has a 16 GB hard disk drive and 64 MB of RAM. The system's memory can be expanded to a maximum of 32 GB with a Memory Stick Micro. You can find more information in the PSP Console Info link.