This is a general overview of the Jaguar's hardware. A better, more in-depth overview can be found at The Jaguar FAQ.
The Atari Jaguar was created by Atari in 1993, and assembled by IBM (and later by Comptronix). It is the first 64bit (yes 64bit, it is capable of doing 64bit operations) gaming system for the home market. While its capabilities aren't quite as stunning
as the N64 or the PSX, it is still quite impressive.
The Jaguar operates off of 5 different processors. They include a Motorola 68000 w/co processor, and two proprietary chips. The "Tom" chip is the main CPU, while the "Jerry" chip handles DSP. The Jag uses 2MB of page-mode DRAM on 4 512K chips.
Cartridges use EEPROM chips, and can go up to 6MB of information.
A DSP and communications port is located on the back of the Jaguar, as well as power, and NTSC video out. The game cartridges connect via an edgecard connector, and two DB15 connectors for controllers are available in the front of the system.