TI-Nspire CX and TI-Nspire CX CAS
The new TI-Nspire CX and CX CAS are the latest update to the TI-Nspire series. They have a thinner design with a thickness of 1.57 cm (almost half of the TI-89), a 1060 mAh rechargeable battery (wall adapter is included in the American retail package), a 320 by 240 pixel full color backlit display (3.2" diagonal), and OS 3.0 which includes features such as 3D graphing.
Texas Instruments currently lists the TI-Nspire CX at $150 and the CX CAS at about $165. The CX series were also released to compete with the Casio Prizm which is priced at $120 and has similar features.
The TI-Nspire CX series differ from all previous TI graphing calculator models in that the CX series are the first to implement a rechargeable 1060 mAh Lithium-Ion battery (previous models required AAA batteries). TI includes an AC adapter for charging the battery; however, the device can also be charged via a PC USB connection. TI claims that the battery requires four hours to charge, and a full charge powers the device for up to two weeks under normal daily use. The battery is user-replaceable and can be purchased via the TI education website for $15 in the United States.
With the exception of interchangeable TI-84 keypads, the CX series retain all features of the previous TI-Nspire models. The colors of the calculator are still the same as those of the TI-Nspire models; the CX is white and dark blue, while the CX CAS is gray and black. The external connectors have changed slightly. The mini-USB port, located at the center of the top of the TI-Nspire series, has moved to the right on the CX series. On the CX series, TI added a second port immediately left of the mini-USB port, for a new wireless module. The new wireless TI-Nspire Navigator adapter, which allows teachers to monitor students and send files, is not compatible with the previous TI-Nspire models. The third port, located at the bottom of the handheld, is for the TI Charging Dock and Lab Cradle. The keypad layout is very similar to that of the TI-Nspire Touchpad.
Both models have 100 MB of user memory and 64 MB of RAM. The retail package does not include the full user's guide, although the teacher edition does. Both devices ship with the student/teacher software for Windows/Mac OS X. According to Texas Instruments, The CX is accepted in SAT, IB, AP and ACT and the CX CAS only on SAT and AP.