ENIAC The Areny's roomful of brmia-Ushaped, sl feet kong anl a0 wide
ENIAC
General view of the eniac From:http://www.library-upenn.edulexhibits/rbm/mauchly/jwm0-e.html
General View of the ENIAC FROM:http://www.library.upenn.edu/exhibits/rbm/mauchly/jwm0-1.html
图片说明 The ENIAC machine occupied a room thirty by fifty feet The controls are at the left, and a small part of the output device is seen at the right. The two men in uniform were being trained to maintain the machine after it was turned over to the Ordnance department(which sponsored the development of the ENIAC). The two women were assistants on the staff of the Moore School who helped program the ENIAC
图片说明 The ENIAC machine occupied a room thirty by fifty feet. The controls are at the left, and a small part of the output device is seen at the right. The two men in uniform were being trained to maintain the machine after it was turned over to the Ordnance Department (which sponsored the development of the ENIAC). The two women were assistants on the staff of the Moore School who helped program the ENIAC
3计算机的发展 代数起止时间构成元件 处理方式 第一代46-57电子管 机器语言 第一代58-64晶体管 高级语言 第三代65-72集成电路 并行处理 第四代72 大规模集成电数据库系 路 统
3.计算机的发展 代数 起止时间 构成元件 处理方式 第一代 46-57 电子管 机器语言 第二代 58-64 晶体管 高级语言 第三代 65-72 集成电路 并行处理 第四代 72- 大 规 模 集 成 电 路 数据库系 统
4.计算机的特点 ●运算速度快(几百万-亿次/秒 精度高(有效数字6位-16位任意) 有记忆能力(存储信息) ●有判断功能 ●能在程序控制下自动工作
4.计算机的特点 运算速度快（几百万-亿次/秒） 精度高（有效数字6位-16位-任意） 有记忆能力（存储信息） 有判断功能 能在程序控制下自动工作