11. 1954 IBM 704
In 1954, the IBM 704 was built, the 704 computer was the first to have indexing, floating point arithmetic, and an improved reliable magnetic core memory.12. 1955 Transistor Based Computer
In 1955, IBM stopped using vacuum tube technology in their computers and built the 608 transistor calculator, a solid state computer with no tubes.13. 1956 Magnetic Hard Disk Storage
In 1956, the RAMAC 305 and RAMAC 650 machines were built. RAMAC stood for Random Access Method of Accounting and Control machines. RAMAC machines used magnetic hard disks for data storage.14. 1959 10,000 Units Sold
In 1959, the IBM 1401 data processing system was introduced, the first computer ever to achieve sales of over 10,000 units. Also in 1959, the IBM 1403 printer was built.15. 1964 System 360
In 1964, the IBM System 360 family of computers were. System 360 was the world's first family of computers with compatible software and hardware. IBM described it as "a bold departure from the monolithic, one-size-fits-all mainframe," and Fortune magazine called it "IBM's $5 billion gamble."16. 1966 DRAM Memory Chip
Courtesy of IBM
In 1944, IBM researcher Robert H. Dennard invented DRAM memory. Robert Dennard's invention of one-transistor dynamic RAM called DRAM was a core development in the launch of today's computer industry, setting the stage for development of increasingly dense and cost-effective memory for computers.
