The IBM 3000 is an information recorder which was used for data collection. The data were collected by being punched directly onto IBM cards.
The IBM 3000 is an information recorder which was used for data collection. The data were collected by being punched directly onto IBM cards.
The most powerful IBM computer system of its time, the IBM 3090 high-end processor of the IBM 308X computer series incorporated one-million-bit memory chips.
The most powerful IBM computer system of its time, the IBM 3090 high-end processor of the IBM 308X computer series incorporated one-million-bit memory chips.
This is a Thermal Conduction Module from an IBM 3090. This is a water cooled unit that holds loads of chips.
This is a Thermal Conduction Module from an IBM 3090. This is a water cooled unit that holds loads of chips.
In 1985 IBM announced a double density version. The Extended Capability Models of the 3380 (3380 E) having 5.04 gigabytes per chassis, that is, two 1.26 gigabyte actuators on two hard disk assemblies in one chassis.
In 1985 IBM announced a double density version. The Extended Capability Models of the 3380 (3380 E) having 5.04 gigabytes per chassis, that is, two 1.26 gigabyte actuators on two hard disk assemblies in one chassis.
The 3390 disks rotated faster than those in the previous model 3380. Faster disk rotation reduced rotational delay (ie. the time required for the correct area of the disk surface to move to the point where data could be read or written). In the 3390's initial models, the average rotational delay was reduced to 7.1 milliseconds from 8.3 milliseconds for the 3380 family.