THE
REVOLUTION OF THE HEWLETT PACKARD HP49 CALCULATOR
HP49G
HP49G+ HP 49 HP 49G HP 49 G+ HP-49 HP-49G HP-49G+
The HP48GX has long been the
backbone of the Land Surveying, Geomatics, and Engineering
industries.
Land Surveyors have relied on the HP48 to run their COGO cards and
total stations, engineers have relied on the HP-48 to store and run
hydraulics and statics formulas, and students have craved the memory
to store custom-made formulas and programs. Now, Hewlett Packard
has chosen to discontinue the HP48GX. Why would they do such a
thing?!?
I'll tell you. It's because
the HP49G+ surpasses the HP48GX in every way. It comes equipped
with a whopping 1.13Mb of on-board memory (compared to 128kb for the
HP48GX), add-on slots, and much more.
Detailed Specifications HP49G+
131-by-80-pixel
display, up to 9 lines by 33 characters
RPN, algebraic, and
textbook entry system logic
1.13 MB memory; over
2300 built-in functions
Advanced statistical,
mathematical, scientific, graphing, and programming features
Carrying pouch,
batteries, and USB cable included
Display size: 131
x 80 pixels (up to 9 lines x 33 characters)
Entry system logic:
RPN, algebraic and textbook
Built-in functions:
Over 2300
Memory/registers:
1.13MB memory; 512KB RAM (330KB user) plus 2MB Flash ROM (800KB
user)
Menus, prompts, etc.:
Yes
Keyboard: Numbers
and letters
Statistical functions:
Sample standard deviation, mean; confidence interval and
hypothesis tests; linear regression; Sigma x, Sigma y, Sigma x^2,
Sigma y^2, Sigma xy; weighted mean; edit, save, name, list; curve
fit (LIN, LOG, EXP, POW)
Mathmatical functions:
+, –, ×, ÷, square root, 1/x, +/–, Ln, e^x, xth root of y, y^x,
LOG, 10^x, x^2, %, pi, n!; fractions; degrees, radians or grads
mode; trigonometric functions/ inverses; hyperbolics/inverses;
numeric and symbolic integration
Scientific functions:
Decimal hrs/hrs min sec conversions; polar/rectangular
conversions; angle conversions; base conversions and arithmetic;
unit conversions; bit, boolean graphics
The HP49G has now been discontinued,
replaced by the HP49G+, much in the same way the HP48SX was replaced
by the HP48GX, but you can still find them on E-Bay. The HP49G
featured less memory and no expansion slots for not that much less
money, but was introduced before the HP49G+ came out.
Slowly, some software companies are
starting to come out with surveying software that is compatible with
the HP49G+. The main problem is that it lacks the serial cable
interface to connect to most total stations. However, I'm sure
it's only a matter of time before there is an adapter available, or
total stations will start coming with USB or Bluetooth.
