My father worked on many generations of Disc and Tape Drives at IBM in San Jose, at Cottle, S 10th st, and other locations. i'll have to show this to him, see who he might remember :) Thanks!
The IBM 350 disk system stored 5 million alphanumeric characters recorded as six data bits, one parity bit and one space bit for eight bits recorded per character.[8] It had fifty 24-inch-diameter (610 mm) disks. Two independent access arms moved up and down to select a disk, and in and out to select a recording track, all under servo control. Average time to locate a single record was 600 milliseconds. Several improved models were added in the 1950s. The IBM RAMAC 305 system with 350 disk storage leased for US$3,200 (equivalent to $33,300 in 2022) per month. The storage capacity of the drive could have been increased beyond five megabytes, but IBM's marketing department at that time was against a larger capacity drive, because they did not know how to sell a product with more storage. (!)
My father worked on many generations of Disc and Tape Drives at IBM in San Jose, at Cottle, S 10th st, and other locations. i'll have to show this to him, see who he might remember :) Thanks!
The IBM 350 disk system stored 5 million alphanumeric characters recorded as six data bits, one parity bit and one space bit for eight bits recorded per character.[8] It had fifty 24-inch-diameter (610 mm) disks. Two independent access arms moved up and down to select a disk, and in and out to select a recording track, all under servo control. Average time to locate a single record was 600 milliseconds. Several improved models were added in the 1950s. The IBM RAMAC 305 system with 350 disk storage leased for US$3,200 (equivalent to $33,300 in 2022) per month.
The storage capacity of the drive could have been increased beyond five megabytes, but IBM's marketing department at that time was against a larger capacity drive, because they did not know how to sell a product with more storage. (!)
7.45. Ramac, what is the stock status of our westor yellow toasters
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19.8