Bottom side of main processing board of Texas Instruments TI-nspire cx CAS calculator. In the top left-hand corner one can see the proprietary Wi-Fi connector. The USB connector is to the left. The ribbon cable connector in the middle of the board is used to connect to the LCD. At the bottom, one can see the board-to-board interconnect that connects to the keyboard PCB.
<a href="//commons.wikimedia.org/wiki/User:Selquim" title="User:Selquim">Selquim</a>
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<span class="int-own-work" lang="en">Own work</span>