Additional Pictures 


Changing the 4 AAA-sized batteries of the TI-Nspire 
needs the keyboard to be removed. 

The backside of the TI-Nspire is clean, just the RESET button,
the slider to release the Keyboard and a covered Port. 


The internal construction of the TI-Nspire makes use of just 2 printed circuit boards (PCB's),
one for the gray-scale LC-Display and power supply and another one for the computing unit. 

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 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 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 18, 2007. No reprints without written permission.