History of IBM magnetic disk drives - Wikipedia
网页A prototype unit shipped in late 1960 was the first disk drive to use one head per surface flying on a layer of compressed air as in the older head design of the IBM 350 disk storage (RAMAC). Production 353s used self-flying heads essentially the same as those of the 1301.
世界上第一块硬盘长什么样? - 知乎 - 知乎专栏
网页IBM的IBM 350 RAMAC(Random Access Method of Accounting and Control)是现代硬盘的雏形，整个硬盘需要50个直径为24英寸表面涂有磁浆的盘片，它相当于两个冰箱的体积，不过其存储容量只有5MB。
存储技术的前世今生（磁存储篇） - 知乎 - 知乎专栏
网页2022年9月15日 — 答案揭晓：它就是后来被称为人类历史上第一块硬盘的ibm 350 ramac。 （全名很长，叫做统计控制随机存取法，Random Access Method for Accounting Control。 IBM 350 RAMAC 更准确来说，它是一台使用了移动头硬盘驱动器（HDD）的商用计算机。
1956: First commercial hard disk drive shipped
网页Informed by Jacob Rabinow’s ideas at NBS, IBM developed and shipped the first commercial Hard Disk Drive (HDD), the Model 350 disk storage unit, to Zellerbach Paper, San Francisco in June 1956 as part of the IBM 305 RAMAC (Random Access Method of Accounting and Control) system.
The IBM 350: Weird Facts About the First Commercial Hard Drive
网页2024年7月2日 — Without HDDs, modern computing wouldn’t be possible, and when the IBM 350 was introduced in 1956, it jump-started a revolution in data storage. Here are a few strange facts about the IBM RAMAC’s 350 “disk storage unit” and its extraordinary impact on computing. 1. The first commercial hard drive wasn’t available for purchase.
网页IBM 350 RAMAC. The RAMAC (Random Access Method of Accounting and Control) was announced in 1956. It included the first rotating magnetic disk drive for mass data storage. It was the first storage device to provide direct access in …
The First Disk Drive: RAMAC 350 - CHM Revolution
网页High speed, random access memory—plucking information from storage without plodding through sequentially—is essential to the way we use computers today. IBM’s RAMAC (Random Access Method of Accounting and Control) magnetic disk …
IBM 350 RAMAC Disk File - ASME
网页The IBM 350 disk drive storage development led to the breakthrough of on-line computer systems by providing the first storage device with random access to large volumes of data.
IBM 350 Disk Storage Unit - IT History Society
网页The IBM 350 Disk Storage was a major component of the IBM 305 RAMAC (Random Access Memory Accounting) system, introduced in September 1956. The 350 Disk Storage Unit consisted of the magnetic disk memory unit with its access mechanism, the electronic and pneumatic controls for the access mechanism, and a small air compressor.
Milestones:RAMAC, 1956 - Engineering and Technology History …
网页Few could have guessed in 1955 that the computer industry's first magnetic disk file, the IBM 350 RAMAC (Random Access Method of Accounting and Control), would one day prove to be of worldwide significance.