IBM 1130 - Revision history

Wave Follower at 16:49, 18 April 2024

2024-04-18T16:49:54Z

Wave Follower at 12:51, 18 April 2024

2024-04-18T12:51:01Z

Peter at 11:58, 15 April 2022

2022-04-15T11:58:17Z

Ky: Created page with "In 1969, an [https://lh3.googleusercontent.com/proxy/uL7IH396jqNXVsR3G65U3KxXSwqm-XBZawU2FgkjqoMLUE8-x25LrNCRhaYReClDkrOb50mK-UNTrmr7CYq_X34EQ0CDy8EyA30eDBE6Hgs IBM 1130] comp..."

2021-08-03T07:10:33Z

Created page with "In 1969, an [https://lh3.googleusercontent.com/proxy/uL7IH396jqNXVsR3G65U3KxXSwqm-XBZawU2FgkjqoMLUE8-x25LrNCRhaYReClDkrOb50mK-UNTrmr7CYq_X34EQ0CDy8EyA30eDBE6Hgs IBM 1130] comp..."

New page

In 1969, an [https://lh3.googleusercontent.com/proxy/uL7IH396jqNXVsR3G65U3KxXSwqm-XBZawU2FgkjqoMLUE8-x25LrNCRhaYReClDkrOb50mK-UNTrmr7CYq_X34EQ0CDy8EyA30eDBE6Hgs IBM 1130] computer was installed in the basement, connected to an IBM 360 at the London Data Centre. This was relatively late - prior to this, data scientists still had to send off the charts to an organisation in Cheshire. Oceanographers at the time used this machine to model coastal & shelf seas.

On how the capacities of processing define the measurement:

Astronomers have long measured the passage of time using Julian dates, defined by Joseph Scaliger in 1853 as the number of days that have passed since noon on January 1, 4713 BC. In 1957, the Smithsonian Astrophysical Union wanted to track Sputnik using a 36-bit IBM 704 computer. They needed 18 bits to store the time down to 100 nanoseconds. The day had to fit in the remaining 18 bits, so they tracked a Modified Julian Date, defined as the days since midnight of November 17, 1858 (Julian day 2,400,000.5).

← Older revision		Revision as of 16:49, 18 April 2024
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−	In 1969, an [https://lh3.googleusercontent.com/proxy/uL7IH396jqNXVsR3G65U3KxXSwqm-XBZawU2FgkjqoMLUE8-x25LrNCRhaYReClDkrOb50mK-UNTrmr7CYq_X34EQ0CDy8EyA30eDBE6Hgs IBM 1130] computer was installed in the basement of Bidston Observatory, connected to an IBM 360 at the London Data Centre. ~~This was relatively late - prior~~ to this, ~~data~~ scientists still had to send off the ~~charts to an organisation~~ in Cheshire. Oceanographers at the time ~~used~~ this machine to model coastal & shelf seas.	+	In 1969, an [https://lh3.googleusercontent.com/proxy/uL7IH396jqNXVsR3G65U3KxXSwqm-XBZawU2FgkjqoMLUE8-x25LrNCRhaYReClDkrOb50mK-UNTrmr7CYq_X34EQ0CDy8EyA30eDBE6Hgs IBM 1130] computer was installed in the basement of Bidston Observatory, connected to an IBM 360 at the London Data Centre. Prior to this, scientists still had to send off their computational work to Liverpool University or later to the Daresbury Laboratory in Cheshire. Oceanographers at the time started to use this machine to model coastal and shelf seas, including development of the storm surge prediction model by Norman Heaps and Roger Flather.

	On how the capacities of processing define the measurement:		On how the capacities of processing define the measurement:

← Older revision		Revision as of 12:51, 18 April 2024
Line 1:		Line 1:
−	In 1969, an [https://lh3.googleusercontent.com/proxy/uL7IH396jqNXVsR3G65U3KxXSwqm-XBZawU2FgkjqoMLUE8-x25LrNCRhaYReClDkrOb50mK-UNTrmr7CYq_X34EQ0CDy8EyA30eDBE6Hgs IBM 1130] computer was installed in the basement, connected to an IBM 360 at the London Data Centre. This was relatively late - prior to this, data scientists still had to send off the charts to an organisation in Cheshire. Oceanographers at the time used this machine to model coastal & shelf seas.	+	In 1969, an [https://lh3.googleusercontent.com/proxy/uL7IH396jqNXVsR3G65U3KxXSwqm-XBZawU2FgkjqoMLUE8-x25LrNCRhaYReClDkrOb50mK-UNTrmr7CYq_X34EQ0CDy8EyA30eDBE6Hgs IBM 1130] computer was installed in the basement of Bidston Observatory, connected to an IBM 360 at the London Data Centre. This was relatively late - prior to this, data scientists still had to send off the charts to an organisation in Cheshire. Oceanographers at the time used this machine to model coastal & shelf seas.

	On how the capacities of processing define the measurement:		On how the capacities of processing define the measurement:

← Older revision		Revision as of 11:58, 15 April 2022
Line 4:		Line 4:

	Astronomers have long measured the passage of time using Julian dates, defined by Joseph Scaliger in 1853 as the number of days that have passed since noon on January 1, 4713 BC. In 1957, the Smithsonian Astrophysical Union wanted to track Sputnik using a 36-bit IBM 704 computer. They needed 18 bits to store the time down to 100 nanoseconds. The day had to fit in the remaining 18 bits, so they tracked a Modified Julian Date, defined as the days since midnight of November 17, 1858 (Julian day 2,400,000.5).		Astronomers have long measured the passage of time using Julian dates, defined by Joseph Scaliger in 1853 as the number of days that have passed since noon on January 1, 4713 BC. In 1957, the Smithsonian Astrophysical Union wanted to track Sputnik using a 36-bit IBM 704 computer. They needed 18 bits to store the time down to 100 nanoseconds. The day had to fit in the remaining 18 bits, so they tracked a Modified Julian Date, defined as the days since midnight of November 17, 1858 (Julian day 2,400,000.5).
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