Texas Instruments TI-84 Plus CE Repair

CPU: ez80, clocked at 48MHz

RAM: 154KB user-accessible; 256KB total.

Flash (ROM): 3.0MB user-accessible; 4.0MB total.

LCD: 2.8 inch 320x240-pixel (16-bit color), memory-mapped (non-touchscreen)

LCD Controller: PrimeCell PL111 Color LCD Controller

Ports: mini-USB. No DBUS (2.5mm I/O) port. USB IP core is the Faraday FOTG210.

Power: Rechargeable lithium-polymer battery 1200 mAh

Battery Life: 30 hours of continuous use at maximum brightness. "Up to one month" with standard use. Deep sleep feature saves power over months of non-use.

Operating System (OS): TI-OS 5.x

• Warning: OS 5.5.1 and higher restricts the ability for the calculator to run programs written in assembly.

Connectivity Software: TI Connect CE

• TI Connect CE eGuide

Programming:

• Official:
  • Assembly
  • Python (only available on Python edition calculators)
  • TI-BASIC
• Unofficial:
  • C
  • ICE

Cemetech.net

Some users also use online graphing tools to simulate TI-84 functionality for learning and practice purposes.

An example of such a tool is available here: https://ti84calculatoronline.org/