The IBM 1400 series are second-generation mid-range business decimal computers that IBM marketed in the early 1960s. The computers were offered to replace tabulating machines like the IBM 407.

2023年3月23日 · IBM 604是IBM开发的一种基于打孔卡的电子管计算机，是第一台使用可拔插模块化电子管的计算机，这个设计降低了维护和生产成本。 电子管的顶部有把手，可以方便操作人员抽出电子管，计算模块包含大约2000个这样的电子管，它们是由几种不同型号的可拔插模块组成。 许多电路被安装在电子管尾部中，使得电子管可以布置得更为紧凑。 IBM 604工作频率为50kHz，程序编写是通过电路板实现的。 最初可以编写40道步骤的程序，升级后可支持60步 …

The IBM 1401 Data Processing System, a stored-program transistor-logic computer announced October 1959. At $2500 per month minimally configured, this was IBM's first affordable general-purpose computer, and it was intended to take the place of all the accounting machines and calculators that still provided a cheaper alternative to IBM's 650 and ...

2003年1月1日 · The IBM 1400 series data processing systems, introduced in 1959, had a dramatic impact on the business world. The first of the 1400 series machines, the 1401, rapidly made the older vacuum tube and electromechanical unit record systems obsolete. The 1400 system enjoyed widespread use in data processing applications from 1959 until "third ...

Pages in category "IBM 1400 series" The following 16 pages are in this category, out of 16 total. This list may not reflect recent changes.

The IBM 1400 series data processing systems, introduced in 1959, had a dramatic impact on the business world. The first of the 1400 series machines, the 1401, rapidly made the older vacuum tube and electromechanical unit record systems obsolete.

The IBM 1400 Series A family of second generation decimal character-oriented computers with variable word length. Each character was 8 bits, 6 for the character code, 1 to indicate the word boundary and 1 parity bit.

La Serie IBM 1400 fue una serie de computadoras transistorizadas de segunda generación de rango medio orientadas a tareas administrativas que IBM comercializó a principios de 1960. Podían ser operadas como sistemas independientes, junto con un equipo perforador de tarjetas IBM, pero su uso principal era como equipo auxiliar de otros sistemas de computadoras mucho más caras, cuyo coste por ...

The IBM 1401 “Data Processing System”, introduced in October 1959, was the “Model-T Ford of the computer industry” 1 and “one of the most important and successful products IBM had ever announced.” 2 About 15,000 1401-family computers were manufactured and delivered worldwide in the 1960’s, 3 far exceeding initial expectations. By ...

2003年1月1日 · The IBM 1400 series data processing systems, introduced in 1959, had a dramatic impact on the business world. The first of the 1400 series machines, the 1401, rapidly made the older vacuum tube...