Voyage 200

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Voyage 200
Voyage 200 pocket computer

Voyage 200 pocket computer

Manufacturer Texas Instruments
Sales start 2002
Technical specifications
processor Motorola 68000
random access memory RAM 188 kB, Flash ROM 2.7 MB
screen monochrome LCD , 240 × 128 pixels
Current operating system proprietary, currently version 3.10
Connectivity

connections

2.5 mm jack plug , interface to ViewScreen

battery pack
Type 4 AAA batteries, 1 CR1616 or CR1620 button cell
measures and weight
Dimensions (H × W × D) 16-30  mm  x 172-184 mm x 115 mm
Weight 396 g
particularities

Computer algebra system , TI Basic and 68K assembler programming, QWERTY keyboard

Website
education.ti.com/deutschland
Program editor for TI-Basic on the Voyage 200

The Voyage 200 is a graphing calculator developed by Texas Instruments (TI). The first model came on the market in 2002 . Its predecessors are the TI-92 and the TI-92 Plus.

The Voyage 200 has a QWERTY keyboard . It has a computer algebra system for symbolic calculations in algebra , analysis , matrix calculation , etc. In contrast to its predecessor, the Voyage 200 also has a built-in clock for performing time-critical experiments and simulations. With the help of an additional USB connection cable, the TI Connect software from Texas Instruments can be used to load additional programs for certain mathematical problems or for special subject areas (e.g. EEPro and EE200 for problems and applications in electrical engineering) onto the calculator. There is now a suitable program for almost every school subject (e.g. TI Vok, a vocabulary trainer). There is also a computer-to-computer cable with which various data can be exchanged between the computers. There are also programs that have nothing to do with school use, such as games or additional tools such as password locks.

properties

The table below shows the technical characteristics of the Voyage 200 compared to the TI-89 and TI-92 .

TI-92 TI-92 II TI-92 Plus TI-89 TI-89 Titanium Voyage 200
processor MC68000
Clock frequency 10 MHz 12 MHz 10 MHz 12 MHz
RAM , total 128 kB 256 kB
available a 70 kB 136 kB 188 kB
Flash
ROM , 		total 1 MB 2 MB 4 MB
available a - - 702 kB 639 kB 2.7 MB
Screen type monochrome
Screen resolution 240 × 128 pixels 160 × 100 pixels 240 × 128 pixels
Power supply 4 ×  AA batteries 4 ×  micro batteries
1 × CR2032 1 × CR1616
or CR1620 		1 ×  SR44 1 × CR1616
or CR1620
Initial release 1995 1996 1998 1998 2004 2002
a available to the user

Function overview

  • All functions of the TI-89 Titanium, but with a QWERTY keyboard and powerful geometry software
  • Compatible with all TI-89 / TI-92-Plus programs and teaching materials. Compatible with all TI-92-Plus software applications
  • Functions, polar, parameter, sequence, 3D graphics
  • Analytical and numerical solution of differential equations
  • Solving complex equations
  • Text, data and program editor
  • Programmable with TI-Basic, a programming language similar to Basic , the 68-K assembler or C (using the TIGCC compiler ).
  • Connection for TI-89/92 / V200 ViewScreen
  • Numerous applications pre-installed
  • Window-based and event-driven user interface

Software error

The TI Voyage 200 produces minor calculation errors with its software, for example

  • sign (0) = ± 1 (correct: 0 (by definition, see signum function ))
  • taylor (cos (x), x, 2.360 °) = 1-3.49065850399E-15 * (x-360.) (correct: 1 (numerical rounding error))
  • With setMode ("Angle", "DEGREE"): (correct: cos (x) (unless you really like the distortion due to the degree unit))
  • With setMode ("Angle", "DEGREE"): (correct: sin (x)), the same applies to certain integrals
  • ∫ (x ^ n, x, c) = x ^ (n + 1) / (n + 1) + c (Missing warning that it is not correct for n = -1)
  • ∫ ((2 * x ^ 2 + 1) * e ^ (x ^ 2), x) = 2 * ∫ (x ^ 2 * e ^ (x ^ 2), x) + ∫ (e ^ (x ^ 2 ), x) (correct, but the solution would be: x * e ^ (x ^ 2))
  • with setMode ("Exact / Approx", "APPROXIMATE") ∫ (1 / x, x, 0, ∞) = 66.132515757963 (correct: ∞, but "Questionable accuracy" is noted)
  • with setMode ("Exact / Approx", "APPROXIMATE") zeros (tan (x) -x, x) some solutions are missing)
  • cSolve (z + 2 * i * conj (z) = 8 + 7 * i, z): z = 22 / 5-9 / 5 * i (correct: z = 2 + 3 * i)
  • sin (z * π) | sin (π * z) = 0 ⇒ sin (π * z) (correct, but 0 would make more sense, analogous to sin (z * π) | sin (z * π) = 0 ⇒ 0)
  • desolve (y '' + k * y = 0 and y (0) = 0 and y (π) = 0, x, y) ⇒ y = 0 (correct: y = @ 1 * sin (n * x) n∈ ℤ with n ^ 2 = k; y = 0 is correct, but the trivial solution is usually not sought)
  • solve (x ^ 2 / x = 0, x) ⇒ x = 0 (correct: "undef" or "false")
  • solve (x = ∞, x) ⇒ false (correct: x = ∞)
  • "APPROX": 10 ^ -1000 ⇒ 0 [no warning] or 10 ^ 1000 ⇒ ∞ [Warning: Overflow replaced by ∞ or -∞] (correct: "Error: Overflow")

equipment

  • TI-CBR 2 Texas Instruments Calculator-Based-Ranger - with the help of this connectable ultrasonic motion sensor, which works on the sonar principle, the Voyage 200 becomes a measuring station. Distances, speeds and accelerations can be measured. Sampling rate up to 200 points / second, max. 512 data points.
  • TI-CBL II Texas Instruments data analysis device including three sensors (light / current / temperature) - records around 12,000 data records (depending on the free memory) at a rate of up to 50,000 records per second and per channel.
  • Vernier LabPro - extensive measuring station to which many different sensors can be connected.
  • OHP screen - a connectable, transparent screen to an overhead projector can be placed, to project as an enlarged image on the wall. This is particularly useful when used in schools and universities.

Web links

Individual evidence

  1. ↑ a b c d e calculator course at Münster University of Applied Sciences. Münster University of Applied Sciences, Department of Civil Engineering, accessed on December 6, 2013 (pocket calculator course, V. Gensichen, R. Runge, TI - Voyage 200).