Additional Pictures 


The backside of the TI-Nspire CAS is different from the
TI-Nspire. The slider to release the keyboard is missing.

The 4 AAA-sized batteries of the TI-Nspire CAS are accessible
from the backside of the calculator. 


The internal construction of the TI-Nspire CAS makes use of just 3 printed circuit boards (PCB's),
one for the gray-scale LC-Display and power supply, one for the computing unit and the keyboard. 

The frontside of the PCB's reveal the construction of the 240 * 320 pixel gray-scale
LC-Display, and the ARM9 based 32-bit RISC processor.  

The brain of the TI-Nspire CAS is actually a System-on-Chip based on the ZEVIO architecture from LSI Logic.
We assume that the 208 pin housing hosts a 90 MHz ARM9 32-bit RISC processor. 

The TI-Nspire CAS uses three different memory chips, a 256k*16 NOR Flash-ROM, 32M Bytes NAND Flash-ROM,
and 16M*16 SDRAM. The clock frequency of the SoC is 27 MHz.

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If you have additions to the above article please email:

Joerg Woerner, July 24, 2007. No reprints without written permission.