IBM's lowest-priced computer to date (in 1980, that is).
Also the heaviest desktop computer ever - 105 pounds!
The IBM 5120 Computing System consists of the IBM 5110 Model 3 Computer, the 5114 external diskette unit, and the 5103 dot-matrix printer.
The 5103 printer is a wire matrix printer used by the 5120 computing system. The 5103 printer provides a hard copy of the data at a rate of 80 characters per second or 120 characters per second.
The 5114 diskette unit attaches to the 5110 Model 3 computer through the I/O channel; one 5114 unit can be attached to the 5120 computing system. The 5114 unit stores up to 1.2 megabytes of data on each diskette drive and may contain two drives. The IBM 5114 external floppy-drive cabinet contains one or two 8-inch floppy drives. They weigh 15 lbs each. The entire cabinet weighs 132 lbs.
On the front of the model 3 are controls to view the data registers, a system-reset switch, and monitor brightness. Internally there is a switch to select from normal or inverse video.
The card-cage is removed from the back of the system - the computer logic is contained on eight cards installed here.
These circuit boards are the same as those of the older IBM 5110, but the rest of the system is new and improved.
Also the heaviest desktop computer ever - 105 pounds!
The IBM 5120 Computing System consists of the IBM 5110 Model 3 Computer, the 5114 external diskette unit, and the 5103 dot-matrix printer.
The 5103 printer is a wire matrix printer used by the 5120 computing system. The 5103 printer provides a hard copy of the data at a rate of 80 characters per second or 120 characters per second.
The 5114 diskette unit attaches to the 5110 Model 3 computer through the I/O channel; one 5114 unit can be attached to the 5120 computing system. The 5114 unit stores up to 1.2 megabytes of data on each diskette drive and may contain two drives. The IBM 5114 external floppy-drive cabinet contains one or two 8-inch floppy drives. They weigh 15 lbs each. The entire cabinet weighs 132 lbs.
On the front of the model 3 are controls to view the data registers, a system-reset switch, and monitor brightness. Internally there is a switch to select from normal or inverse video.
The card-cage is removed from the back of the system - the computer logic is contained on eight cards installed here.
These circuit boards are the same as those of the older IBM 5110, but the rest of the system is new and improved.