DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-73 Explorer
| Date of introduction: | 2003 | Display technology: | LCD dot matrix |
| New price: | $69.99 | Display size: | 8 * 16 characters |
| Size: | 7.2" x 3.2" x 0.80" 182 x 81 x 20 mm3 |
||
| Weight: | 6.4 ounces, 182 grams | Serial No: | 2242007236 |
| Batteries: | 4*AAA + CR1620 (35mA) | Date of manufacture: | mth 04 year 2004 |
| AC-Adapter: | Origin of manufacture: | China (S) | |
| Precision: | 14 | Integrated circuits: | CPU: Zilog Z84C00 ASIC: TI-REF 9815455 Flash: F29LV400 RAM: HY62WT081 Display: Toshiba T6A04A |
| Memories: | |||
| Program steps: | 25k Bytes, 128k Bytes Flash-ROM | Courtesy of: | Joerg Woerner |
The
TI-73 Explorer followed the TI-73 and serves as a bridge between the TI-15
Explorer and the TI-83 Plus.
Dismantling
the TI-73 Explorer reveals no surprises, the printed circuit boards (PCBs) are
still identical with the TI-83 Plus and based on 5 main Integrated Circuits:
 | Zilog Z84C00 microprocessor |
| 512k Byte Flash-ROM |
| 32k Byte RAM |
| TI-REF 9815455 ASIC |
| Toshiba T6A04A: Single-chip 64*128 pixel display driver |
The
picture on the right gives an enhanced view of the ASIC "TI-REF 9815455"
integrating some support
logic.
A
component not easily detected on the printed circuit board (PCB) of the TI-73
Explorer is the driver circuit of the LC-Display. It is just a bare chip mounted on
a flexible piece of circuit board attached between the display and the main PCB.
Stokes Publishing Company, Inc. based in Sunnyvale, California
sold a companion for the teacher, view the wonderful TI-73
Explorer.
Explorer™ is a trademark of Texas Instruments.
ROM-Versions:
1.60 (December 16, 2001)
1.90 (February 6, 2006, actual in February 2008)
You can check the ROM version of your TI-73
Explorer using the following key sequence and reading the number on your screen:
