
Phillip's Economic Computer
1949
1949
1949
1945
1942
1940
2000-100 BCE
1945
1947
1940
1942
1946
1940
1950
circa 1950
1950
1948
1940-1945
1940-1949
1942
circa 1950
1943
1940
1947
1948
1940
1950
1955; 1830
1945
1948
1946
1943
1948
1941-1950
1949
1950
1948
1949
1946
1946
1944
circa 1942
1940-1944
1946-1948
1938 and 1951
1944-1945
1946
1950
1940
1942-1945
1943