Heathkit IC-2108 Operation Manual
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Operation
Manual
for
the
MODEL
IC-2108
ELECTRONIC
DESK-TOP
CALCULATOR
HEATH
COMPANY
BENTON
HARBOR,
MICHIGAN
.8022
TABLE
OF CONTENTS
IntroductJon
.3
.4
• •
· 7
1
• •
• •
• •
,.
11
12
13
"
15
"
•
•
•
•
a-nl
....
"...,
...
Owt
t: 1 - AdClhar,
o.n"'2
-SubtJxtian
o.t
$:3 - """ bplw.:.tIOft
Owt
44 -
D",_
. . .
Ctw1~-""....d
CeIcu~uat"
I.,
s._
a.rt
d - Ml.ltbptyu
..
by
• ConItwtt •
a..t
.7
- DllIong
by.
ConIUnt
a..t
.a
-
Ra$ni.
NumbIr
10'
Poww
Q\Irt
.e"-
RaoIII'I8'
~
10.
~
USIng
ConNnt
Q\Irt
d - CllauIMl".
Ntgrb
...
e
~
of
Nwn...
. . •
o.td"-~Rclpl'llclh
.
a..t
Ifl0
-1JNnCI1tMI
CD
K.y
to R Enonaaus
~
--
•
17
flllid
o.c...t
..
• • • • •
"
21
Reofw
....
T
....
72
•
INTRODUCTION
Thil
..............
N
-.eos-.tIOr'lofYOloll'~IOf.
Ta••'-
.......
~
r_
tht
...,....
Md~,..
you
bicu
••
~
..
WIth
'fO'IT
wt'lJt.
You
c.1
..,idtty
Ind
~lIty
add.
aIbtnct.
_1tJIIty.
MIl:
crr..
In
...
..,.
an","f
...
_d
~.
In
fac1
YGl
"..,
M:/IOn
U.
your CaIr;uIMDt forPI..,>.11'1
__
you
lid
not
ongjnIIly
CIOf1Iidw.
Common
.........
~
..
PtCI\'tCled
for
..,k*
A'f~.
you
...-d
thin\.
...
OPERATING
FEATURES
F
.....
1
po,tta
OUt
IN
OIMntinlll
,.....
,.
of
1M
~.
Uctt
'.tunI
II
dIIcr1bed
t*ow;
1.
POWER
SWITCH
- r
........
thI
0dcI.I,,*
on
and off.
2.
S.OIGIT
READOUT
- Dbpa.ys the
I"Im1tlen
In
thI
c:ab.itltion
~
bctI
dIGit
_lion
"
CIpIbIt
of
dltplrtin9
IIoIl'l'IbIr1
0
Ihnlu-,
8
-:I
I
~IPOl"t.
3. NEGATIVE
NUMBER
t~OtCATOR
-
l.¥ID
I-I
to
1,*,'I'''''u-..
m_.
...
OVER
RANGE
INDICATOR
-
lJI;\a
wIwIlht
~
OfIkrty
of
1M
c.k:vUtof
h-.
t....
.c-'-l.
S.lhee:twt
on'"
18.
5.
DECIMAL POINT -
I~
1M
klcation
of
1M
dtclFNll
point
in
thI
nr"m.
If10wn
on
1M READOUT.
6.
DECIMAL
PaIHT
SWITCH
- s.c:
••
l:hIr.
fuud
Of.
f1D11ton1
......
POOttt
1l't*\IOn
In
m.
~
The
feud
poWon
/I
~1Nd
wIwI
ytIU
won the
uno\.
ThI
IflOltlngl
pcIIllJon
P'mWb1MUNtto8U""""'tic;alty
pa-
""
dKOI''''
poHn
WhIr.
It
......
11
,ndudI
tht
mott 1'll
....
'Q!'I"t
MII'I'lben.
ReI.
10
p
...
21
In
tho, M.nu.II lor
lvrm.
fOfmltJOn
on'..
lId
~
poeM
ot*lbOn.
7.
IKI
CONSTANT
SWITCH
- Thil
,whdl
_ illlIP'
In
"""ltl~tJOn
or
dlYWon
-.....
CGl'lIUl'll nutI'ItMr
II~
u.s,
by
not:
,.,
•
.,..lNt
IN
oomtanllUT'b«
bI
~
tid'!
tiIM.ISM
hgiIIl0end
11.1
a.
lel
C1.EAR
KEY
-
PuIh
m"
k..,10dW
...
I'UtltMn
In
IN
c.aeu"'1Of
Ind
,_It
to
Z~.
9.
{Col
CLEAR DISPLAY
KEY
-
~
1tl1l
k..,tod_
Itt
II
..........' kl'y
MU'YtoN 00111I« t'aIl'l'lbw
Of
futlctlon
CIn
bI
..,
...
'The
Co
It..,.
woll
not: dlAlJrb
...
~t
of
..
optntHM1
in rtoI'I9I
ot.n-
on
Iht
~
10.
NU
BER
ENTRY KEYBOARD -
UN
U-
k..,.10IInW
numbln
Into
tnt Ctlc:ulMot.
11.
I-I
SUBTRACTION
KEY-1'\I1Ih
ttl.
key
blfcn
'(01.1 '"'*'.
ftUf'l\Otr
to
bewtJU'ktad
fTOf'II
an
alI.~
nu
....
'"
the
CakulilOf.
12.
1~1
DIVISION
KEY
-
P\I1h
dill
by
befoN
yCI.I
an_
a ,.,rNHr
10
be
d
....
idId
Into
an
DIS!,,,'--lr'I1tIeCalaltilllDf.
13.
ttl
ADDITION
KEY
-
P'\IIh
ttl"
k....
Mi'on
youen..Inumblr10tit
IOMdtoWI
...
ung
I'lUII'lblr In tIM ClkWllOf.
14.
(XI
MULTIPLICATION
KEY
-
PuIh
dink....
t.foR
YOI.i
an..1"",,",,*
to
bIIIftl1li9111d
by
an
oillinllWolmDw
In
1tlI CIIloJtItor.
1S.
(-)
EDUALS
lTDTAU
KEY-......hVIiiby10
,*"",1'1II111
c:ale\.llIItion
and
...
tt.
rtalltJI'lI
__
on
1M
A
EADOUT.
• C
•
CD
(lIU
In
C.l"
IIHlU
.,.
10
F.."..,
.....
.....
OPERATING
PROCEDURE
a-u
..
""""
10
hiIIp
you
bcoi,.
bn\1
..
with " Clkut.tDr.
0IInI
I
n~
4,
~
folboot.
iIluwt_
'1M
four
t.oc
functionsofn
c.kulttor:
ADDITION. SUBTRACTION. MULTIPLICATtON.
and
DIVISION.
a.t
6
__
millie!
ak:ulltloN;
0w1:I
81M1
thOIII'
lI'II.lIuplkldon
MCl
dw""",
by.
conItarot;
0wtJ
8 lind g
thow
how
to
c:lku1tUl
potItlV'I
tnd
M!l"tN.
POWWI
of
runMn;
Owt
10 1howI1h.1.IIIofh
(CDI
CLEAR DISPLAY.
A
ample
en., k included
,,"1
to
thorN
1C1LI"
r_doIol1
•.
1"-~.
In
fI~
1
-S
J
..
omitted
from h function c:Nr1L
&eft I'lUmbIAd
step
(line'
of
tht
OwtIlhows
....
tllcn w.p.,11nd ful"ClJOO
It.,..
to
PlIIh,
InC!
what
1M
"""t
'Mil be.
U.
WI.
flc.1""1
dKl~
modl
for
"I
the
......
CofwMct
the
Uno!
tQ
an
~pn."
AC
pcI'lIIIW
-.ource.
Th"
"Ppfi.._
~
ID
thI
drOollttogIyt
Inwnt-ort
oper1ltion
'tIItt«l
tht
~
SWlteh
I,
tum«f
on.
II
the
UM .....
"-'
dbtoo.
......
.-d
for
IOl'nt
time, It
/Ny'"
up
to
30
*OnCk
fOf
the
clapI.y
to
Jlltlt
In.
dtmIyht.....
Befor.
yOl,l
big.,.. any
ulcvlMlCn,
It is
fOOd
prxtlce
10
push
Ut.
leI
CLEAR
It
....
to
tMt
ttM
CMc:ulltor.
SAMPLE
CHART
READOUT
CHARACTERISTtcS
CONSTANT
SWITCH:
OFF
STEP
INPUT FUNCTION
READOUT
1
[[t
[J[[I~
I
0.
101
ZERO
PRECEDES
fRACTIONAL
NUMBERS
7
f!:I
I
o.
II
(DECIMAL
fLOATS)
3
~[illrm
I
0.521
lO.l
STOREDI
•
[t1l
I
0.621
.
CHART.1
-ADDITION
ADD:
,
...
,
.....
CONSTANT
SWITot:
OFF
,
....
ST"
I
...
UT
FUNCTION READOUT
I
[[I[[iriri!:l!I[O[ill
~
I
155.
n
2
[llj~[EJ[llJ
~
I
18
G.l.fl
CHART"
2 -
SUBTRACTION
SUBTRACT:
,
.....
- 41.22
CONSTANT
SWITot:
OFF
...
"
ST"
INPUT
FUNCTION
READOUT
1
~[llJ~[IDj[lJ~[Ul
~
I
10
8.
l.f
81
2
~IDJrJill[llJ
l[I
I
60261
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