DATAMATH CALCULATOR MUSEUM
|Changing the 4 AAA-sized
batteries of the TI-Nspire CAS
with Touchpad needs the keyboard to be removed.
of the TI-Nspire CAS with Touchpad features a
cover to access the optional, rechargeable battery.
construction of the TI-Nspire CAS makes use of just 3 printed circuit boards
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.
two different memory chips, a 32M Bytes
and 16M*16 SDRAM. The clock frequency of the SoC is 27 MHz.
CAS makes use of three highly integrated display drivers.
One Novatek NT7702
for the 240 rows (top) and two unidentified chips (bottom) for 160 columns, each.
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© Joerg Woerner, March 14, 2010. No reprints without written permission.