Time Line

The small size of my collection allows presentation along a time axis together with some basic information:

Weight, price in terms of  # months average net income for a Dutch workman, year of introduction.

Year of introduction, weight,  price in terms of work for an average labouror

1956

13 Kg

8 mo

17 Kg

12 mo

1954

12 Kg

10 mo

7 Kg

1 mo

1952

6 Kg

4 mo

Brunsviga 11E

7 Kg

2 mo

Bohn Contex 55

1976

1,5 Kg

2 mo

Year of introduction, weight,  price in terms of work for an average labouror

0,5 Kg

1 mo

3 wk

Mechanical Calculators

Electronic Calculators

Olympia CD400

Soemtron 215

5 Kg

8 mo

16 Kg

5 mo

1953

Canon LE-10

1964

Brunsviga 11E Hamann 300 Facit CA1-13

1962

Brunsviga 13RM

3 mo

Friden 1217

1967

20 Kg

6 mo

Friden 1217 Bohn Contex 55

Philips P252

4 mo

Sharp QT8B

Sharp QT8B

Brunsviga 13RM Olympia CD400 Adler 1216 HP-97 Casio FX-801P

Casio FX-801P

HP-97

1981

1,4 Kg

Hamann 505

Programmable Machines

1950

Marchant 8ADX

18 Kg

24 mo

Marchant 10EFA

Marchant 10EFA

1962

21 Kg

8 mo

Soemtron 215

1,6 Kg

Victor 1900

Victor 1900

1973

Marchant 8ADX MBO TRS 1300P

1977

3 Kg

1 wk

3,5 Kg

2.5 mo

Friden (Singer) EC 1117

1971

Friden (Singer) EC 1117

Precisa 366-12

1968

9 Kg

3 mo

Precisa 366-12 IBM Selectric II Olympia RA16

7 mo

1961

Friden SBT10

1959

14 mo

Friden SBT10

18 Kg

24 mo

1953

MADAS 20ATG

Madas 20ATG

Diehl DSR18

16 Kg

16 mo

Diehl DSR18

Brunsviga 16E

17 Kg

7 mo

Brunsviga 16E

1955

20 Kg

1957

1960

Olympia RA16

< 1 wk

1,7 Kg

ELKA 53

ELKA 53

1976

< 1 wk

0,25 Kg

LLoyds Accumatic 55

Lloyds Accumatic 55

18 Kg

7 mo

Marchant 8 CMR

1963

Marchant 8CMR

< 1 wk

Casio FX-7000G

Casio FX-7000G

152 gr

Walther EMKD

Walther EMKD

1929

10 Kg

1954

15 Kg

19 mo

Monroe 8N-213

18 Kg

15 Kg

Facit CA1-13

Hamann 300

Monroe 8N-213

6 Kg

2,5 mo

1953

Hamann ManusR

Hamann Manus R

TI SR56 & PC100

2,5 Kg

3 wks

TI SR56&PC100

MBO TRS 1300P

Hamann 505

Brother AX-430

1984

140 gr

< 1 wk

Casio FX-730P

Casio FX-730P

1982

1600 gr

1 mo

Epson HX-20

Epson HX-20

1985

Philips P252

6 mo

12 Kg

1968

Canon 130s

Canon 130s

1 mo

1,6 Kg

Facit 1113

Facit 1113

Lloyds Accumatic 100

0,7 Kg

1972

LLoyds Accumatic 100 (Vitabox)

< 1 wk

1978

Adler 1218

1,2 Kg

Adler 1218

3 wk

1982

2 Kg

Sharp PC-1500/CE-150

Sharp PC-1500

< 1 day

General Teknika 8105

50 gr

General Teknika 8105 Citizen MB-280

While in 1970 heavy, noisy mechanical calculators were still sold and widely used, only 20 yrs later this credit-card sized device comprises a calculator,  telephone book, clock and more for a very small fraction of the price of those mechanical calculators.

< 1 day

<50 gr

Casio fx-68

1979

1980

Casio FX-68

7 Kg

1 mo

Olympia AE-D1

Olympia AE-D1 Facit 1140

2 wk

Facit 1140

0,7 Kg

1965

1970

1975

1 mo

2 wk

1,5 Kg