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NUMERIA 8213


Have a look at the Restoration Procedure...

TECHNICAL DATA       of the  Electro-Mechanical Calculator  NUMERIA  »8213«
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Serial Number:       050914

Dimensions:   (ca.)  Width   =  14_1/2" /  37 cm
                     Depth   =  12_1/2" /  32 cm
                     Height  =   6_1/2" /  17 cm

Weight:       (ca.)  22 lbs  /  10 kg

Power Supply:        110 / 220 V AC / DC

Mechanics:           10*10 Full-Keyboard
                     SPECIAL  N U M E R I A  CODING  ( see below !)  ...
                     ... PINWHEELS  with  A X I A L  SPROCKETS
                     Counter Stepping Mechanism Animation

Functions:           Add, Subtract, Multiply, Divide

Registers:           Input       =  10  Decimals
                     Counter     =   8  Decimals (NO Carry; Neg.Fig.RED)
                     Arithmetic  =  18  Decimals
Manufacturer:
                     NUMERIA
                     Lagomarsino, Milano / Italy
                     1965

H O W   T O   U S E    the  NUMERIA 8213
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BEFORE STARTING A TASK:
-----------------------
CLEAR the KEYBOARD by pressing the lower right Button.
CLEAR the COUNTER unit by turning the carriage crank clockwise.
CLEAR the ARITHMETIC unit by turning the same crank counter-clockwise.
When the LEVER ON TOP is switched LEFT, THE ARITHMETIC UNIT will
     N O T  BE CLEARED in its LEFT PART (= Positions  18 .. 10 ).
Shift the CARRIAGE to the left (= Pos. 1) by turning the wheel in front.

GENERAL:
--------
Keys [+] & [-] start Add- & Subtract-Procedure and CLEAR KEYBOARD after it.
Keys [x] & [:] start "Multiply"- & "Division"-Procedure
     same as [+] & [-]   BUT   D O   N O T   CLEAR KEYBOARD  after it.

Under COUNTER & ARITHMETIC UNIT are turnable (!) DECIMAL MARKER-BARS:
     Each bar contains 4 PRE-SET patterns.

ADDITION & SUBTRACTION:
-----------------------
Example:   123 + 45 - 6  =  162

ADD: Enter the first number (123) in the far right columns. Press the
PLUS-key [+] to transfer the number into arithmetic unit. The counting
unit displays the figure 1. Enter the second number (45). Press the PLUS-
key [+] to add the number. The arithmetic unit displays the intermediate
sum (168) and the counting unit displays the figure 2.

SUBTRACT: Enter the third number (6). Press the MINUS-key [-]. The
arithmetic unit displays the result (162) and the counting unit is
decreased by 1.

REMARK:     NEGATIVE RESULTS are displayed in the arithmetic unit
            as the COMPLEMENT of the next higher 10, 100, 1000, ...

            Example:   -12  =  99...9988

MULTIPLICATION:
---------------
Example:    123 x 45  =  5535

Clear counter and arithmetic units.

Enter the multiplicand (123) in the far right columns. The multiplicator
(45) has two digits, so the arithmetic unit is moved to position 2 with a
clockwise turn of the wheel in front. Repeat pressing the Key [x] until
the first figure of the multiplicator (4) will appear in the 2nd position
of the counter unit. Move the arithmetic unit to position 1.  Repeat
pressing Key [x], until the second figure of the multiplicator (5) appears
in the 1st position of the counter unit.  The multiplication is done: The
multiplicand (123) stays in keyboard, the multiplicator (45) is in the
counter unit and the result (5535) is in the arithmetic unit.

DIVISION:
---------
Example:   22 : 7  =  3.1428571  Remainder 3

Division requires 3 steps:

(A) To Set the Dividend into Arithmetic Unit:
    -----------------------------------------
    For the maximum number of decimals, pull out the arithmetic unit to the
    far right position. Enter the dividend (22) in the far right columns.
    Press the PLUS-key [+] to transfer into arithmetic unit.

(B) To Set the Divisor in the Keyboard:
    -----------------------------------
    Clear the counter unit by turning the carriage crank clockwise.
    Enter the divisor (7) below the dividend (22).

(C) To Divide:
    ----------
    Press Key [:] until the arithmetic unit shows an "underflow".  Press
    Key [x] once to correct.  Move the carriage to the next left position.
    Repeat this procedure until the required number of decimals ...

    The result (3.1428571) is in the counter unit ( in RED ), and the
    remainder (3) is in the arithmetic unit. The divisor (7) stays in the
    input unit, therefore an additional decimal can be estimated ...
    ( 4, cause 4 x 7 = 28).

The lower left "ITEM-COUNTER" lever:
------------------------------------
Because the counter has no 10s-carry, there is no "build-in" counting of the
items to add. Here the "Item-Counter" lever is useful: When the LEFT KEY [1]
is pressed and the NEIGHBOR-LEFT KEY shifted towards KEY [1],  KEY [1] is
locked. Now the arithmetic unit will count the items in the left column.
The "CLEAR KEYBOARD" Button will NOT clear this [1] key  -  and when the
LEVER ON TOP is switched LEFT, the count will stay when the arithmetic unit
will be cleared. Shifting the NEIGHBOR-LEFT KEY left will release Key [1].

R E M A R K S :
============================================================================
The NUMERIA looks like a  MONROE- or NISA-CLONE - BUT   I T   I S   N O T  :

   

                                 ... PINWHEELS  with  A X I A L  SPROCKETS !

See  M.REESE & P.HAERTEL  » NUMERIA - nur scheinbar eine MONROE-Tochter «
 
     in     http://www.rechnerlexikon.de/files/NumeriaQuer.pdf

There are  two  S T I C K E R S  on the case ( front & back ),  refering to
an office machine shop in MONTMARTRE / PARIS ...

  

                             ... Wished the calculator could tell his story!

PS.: The boring military brown-green appearance of the NUMERIA is contrasted
by my SKAT-Mug.  The card game "Skat" is popular in Germany like "Fussball". 
And there is a RELATION:  The word  "Skat"  came from the Italien "scartare"
(= "put aside" ) refering to the  two cards  placed upside-down on the desk.

impressum:
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© C.HAMANN         http://public.beuth-hochschule.de/~hamann        03/14/11