TI-84 Plus

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TI-84 Plus
TI-84 Plus graphing calculator

TI-84 Plus graphing calculator
Manufacturer Texas Instruments
Sales start 2004
Technical specifications
processor Zilog Z80
random access memory RAM 24 KiB, Flash-ROM 480 KiB
screen monochrome LCD , 64 × 96 pixels
Current operating system proprietary , current version 2.55
Connectivity

connections

Mini-USB , 2.5mm jack plug

battery pack
Type 4 AAA batteries, 1 SR44 button cell
particularities

programmable in TI-Basic and Z80 assembler

Website
education.ti.com/deutschland
TI-84 Plus
TI-84 Plus Silver Edition with blue cover
TI-84 Plus Silver Edition with gray cover

The TI-84 Plus is a graphical calculator from the American semiconductor and electronics company Texas Instruments .

History and characteristics

The first model was launched in 2004. According to standard Texas Instruments naming conventions, “plus” indicates that Flash ROM memory is built in. The TI-84 Plus is the successor to the TI-83 Plus (1999) and is compatible with every TI-83-Plus program, but has almost three times the storage capacity (in the "Silver Edition" variant, even more than nine times as much) .

The TI-84 Plus and the TI-84 Plus Silver Edition both have a " Zilog Z80 " processor clocked at 15 MHz .

The following table shows the technical properties of the Ti-84 compared to TI-83 .

TI-83 TI-83 Plus TI-83 Plus
Silver Edition 		TI-84 Plus TI-84 Plus
Silver Edition 		TI-84 Plus C
Silver Edition 		TI-84 Plus CE /
TI-84 Plus CE-T
processor Zilog Z80 Zilog eZ80
Clock frequency 6 MHz 15 MHz 48 MHz
RAM , total 32  KiB 128 KiB 48/128 KiB a ?
RAM, available b 27 KiB 24 KiB 21 KiB 154 KiB
Flash ROM , total 512 KiB 2048 KiB 1024 KiB 2048 KiB 4096 KiB ?
Flash ROM, available b - 160 KiB 1500 KiB 480 KiB 1500 KiB 3500 KiB 3000 KiB
Screen type monochrome 65,536 colors
Screen resolution 96 × 64 pixels 320 × 240 pixels
Power supply 4 ×  micro batteries Li-ion battery
1 × CR1620 or CR2020 1 × SR44 button cell -
Initial release 1996 1999 2001 2004 2005 2013 2016
a depending on the hardware version
b available to the user

The TI-84-Plus can be connected to a computer or another TI-84 Plus / Plus Silver Edition via mini-USB , the 2.5 mm jack socket is available for connection to a TI-83 (Plus) or TI-82 (Stats). The so-called teacher version of the TI-84 Plus Silver Edition has a wide plug at the top for connecting a transparent liquid crystal overlay called a ViewScreen for projection of the screen content using an overhead projector . The current version of the TI-84 Plus operating system is 2.55MP.

Program

The TI-84 can be programmed using both TI-Basic and Z80 assembler . A possible but difficult variant of the assembly is that a TI-Basic program is created, which is structured as follows: 

 : AsmPrgm
 : "Programmcode in Hexadezimal"

The programmer must have the entire instruction set in stock or know it by heart. There is a danger that an incorrect command can render the TI unusable (overwriting of memory) and also that an incorrect command immediately resets the TI-84 Plus to its factory settings, whereby the program is lost. With AsmComp()assembler programs can be compiled and Asm()executed with.

Further developments

  • TI-84 Plus Silver Edition offers more memory for user data (1.5  MiB ).
  • An advanced software emulation for Windows and Mac is SmartView for TI-84 Plus.
  • TI-Nspire with ClickPad can emulate a TI-84 Plus Silver Edition using an additional exchangeable keyboard .
  • TI-84 Plus C Silver Edition as a variant with 65,000-color display and background lighting as well as a proprietary lithium-polymer battery .

Web links

Commons : TI-84 Plus  - Album containing pictures, videos, and audio files

Individual evidence

  1. ↑ Technical data of the TI-84 Plus ticalc.org
  2. ↑ Details on the TI84 Plus C Silver Edition on the manufacturer's website
  3. ↑ Download the new operating system from education.ti.com
  4. ↑ Test on Gizmodo