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From the Archives - IBM 1130

In February of 1967, ����ר�� College took its first step into the computing age when an order was placed for an IBM 1130. According to the IBM website, the 1130 was first released in 1965 and was promoted as a “low-cost, medium-sized” computing option. The machine could be purchased for $32,280, although ����ר�� rented its unit for approximately $800/month.

IBM promoted its 1130 in the original press release of 1965 in this way: “The desk-sized 1130 is designed for individual use by engineers, scientists and mathematicians. But with its range of peripheral units, the 1130 also will be used in such fields as publishing, construction, finance, manufacturing and distribution. For ease of use by many individuals, an advanced storage technique is available with the 1130 computer. Data and instructions for computer processing are recorded on a magnetic disk similar in appearance to a phonograph record. Disks are protected by a plastic cartridge. Each IBM 2315 disk cartridge can hold the equivalent of more than one million characters of information.”

����ר��’s plan was to use the “incredible speed, permanent memory, high accuracy and automation operations” to facilitate course registration, grade computations, maintenance of alumni records and standard business computations. But the efficient and affordable IBM 1130 wasn’t just chosen for ����ר��’s administration. It was also selected with ����ר��’s business students in mind and soon became a favorite tool of ����ר�� professors such as Larry Christensen, Fred Trexler ’64 and Ted Norton.

The computer was installed in “Russell House” (later known as “Pickle House”) over Christmas break in 1968. It was initially operated by Gary McEwan and programmed by ����ר�� alumna Donna (Stewart ’67) Gross. Donna was trained by IBM and, prior to her work at ����ר��, held a contract with NASA. According to a ����ר�� Star article dated January 17, 1969, the first users of the computer were students, who used the computer for “socialized final exams.” By 1970, students were anxiously worrying over their courses in Basic Fortran.

The IBM 1130 was later moved to the “new science building” (now known as the Paine Center for Science) and was replaced by 1978 with a PDP/1170 computer with a convenient sixteen terminals. The PDP/1170 had a remarkable 128 k of internal memory, a tape drive, a punch card reader and a graphic terminal. The installation of the PDP/1170 terminals was celebrated with the formation of ����ר��’s HC3 – that is, the ����ר�� College Computer Club.

Did  you know?

You can find digitized versions of all editions of the ����ר�� STAR, the Boulder, the Milieu and ����ר�� Magazine online through the Willard J. ����ר�� Library? Visit to read an excellent article about the IBM 1130 written for the ����ר�� STAR by Sharon (Lamos ’73) Oppedisano and published on October 1, 1971.