#Free42 forum manual#
#Free42 forum full#
#Free42 forum free#

# because if I type 63 5 + (= 68)and then last X without clearing X before # last X can be used to but in cooperation with drop of the register X # This is how the CLX function works (or clx). # because we just used the register X together with Y but Y is not consumed.

# actually with this operation we never activate the stack drop,

#Free42 forum full#

Typing: 117 enter enter enter (check with Rdown that the stack is full of 117) In short, when numbers are entered they lift the stack, when they are “consumed” the stack drops replicating the last register, T. The f42 achieve this with how the stack registers ( X, Y, Z, T ) are designed. On the 506w there is the possibility to do constant calculation. Also the 506w commands can be read on the manual, so I would post non-obvious procedures only for the F42. If the reader does not know the RPN, nevertheless the examples here written (one should deduce the syntax thought) or the documentation provided by the Free42 homepage would be enough to master it.

#Free42 forum free#

The HP 42s (or Free 42) uses the RPN notation that is assumed known by the reader. Indeed it is an exploration.ĭuring the comparison, some operations, assumed to be “common” would be skipped. Moreover the exploration may miss functions declared as “not there” but being implemented in the free42.

Why scientific calculators? Because the HP 42s is advertised so, rather than being programmable. The same comparison can be made with other non-programmable non-graphing scientific calculators. It is like an exploration by comparison and of course it will miss functions that are partially mentioned or absent on the sharp 506w. From now on the Free42 is mentioned as f42 or and the sharp el 506w is mentioned as 506w.

#Free42 forum manual#

This article is made as a byproduct of exploring the Free42 while trying to find out if the functions mentioned in the manual of the sharp el 506w (produced in the early 2000, the manual was made for 506w and 546w models), a scientific calculator not programmable and not graphing, are present on the HP 42s or better on the Free42. As on the original HP-42S, BST will start auto-repeating after a while and SST will NULL after a couple of seconds if you press and hold ▲ or ▼ respectively.

Press and hold the SHIFT key while pressing ▲ or ▼ in order to execute BST or SST respectively when in alpha input mode. Un-shifted R/S still behaves as usual allowing program execution to resume after inputting alpha data to a program.įunction arguments (eg. Local labels LBL A and LBL a and global labels LBL 'ABC', LBL '123' and LBL 'A123' work as expected. Two-digit local labels LBL 01 are not available. Switch to standard HP-42S mode to get them. Shifted R/S gives '?' instead of entering/leaving Prgm mode.ĪSTO, ARCL, '%', 'pi' and 'E' (exponent) are not available. Shifted ÷, ×, - and + give '÷', '×', '-' and '+' instead of the alpha characters. SHIFT 0 (zero) to SHIFT 9 give the digits 0-9 instead of the alpha characters. SHIFT A to SHIFT O give the same characters. The function keys still allow input in HP-42S mode.Īll alpha keys A-Z give the expected characters. IR Transmitter compatible with the original HP-82240A/B printerġ × CR2032 lithium coin cell, 3.0 volts Ĥ kHz resonance frequency Piezo-electric buzzer USB-Micro-B port, connects as USB mass storage device Monochromatic ultra high contrast (14:1) transflective memory LCD display IEEE 754-2008, 128-bit floating point precision implementation with 128-bit transcendental function support Open Source Free42 running on SwissMicros Operating System (DMCP) Flashing QSPI using dm_tool (obsolete)Ĭase made from stainless steel, matte black Physical Vapour Deposition (PVD) coated and laser engraved