"全国计算机二级虎奔选择题含答案.doc详解"

"Msoffice National Computer Level II Tiger Bens Multiple Choice Questions with Answers.doc; Msoffice National Computer Level II Tiger Bens Multiple Choice Questions with Answers.doc;. .Footer. 1. The recognized year of birth of the world's first electronic computer is ( A) 1930s B) 1940s C) 1980s D) 1990s 【Analysis】The world's first modern electronic computer "Electronic Numerical Integrator and Computer" (ENIAC) was born on February 14, 1946 at the University of Pennsylvania, and is still recognized by people today. 2. The capacity of a 20GB hard disk is approximately ( ). A) 20 billion bytes B) 20 billion binary digits C) 200 billion bytes D) 200 billion binary digits 【Analysis】According to the conversion formula 1GB=1000MB=1000*1000KB=1000*1000*1000B, 20GB=2*1010B. 3. In a microcomputer, the encoding used for Western characters is ( ). A) EBCDIC code B) ASCII code C) GB code D) BCD code 【Analysis】The encoding used for Western characters is the ASCII code. 4. Computer security refers to the security of computer assets, that is ( ).;" 总结：本文是关于计算机二级虎奔选择题的材料，其中包含了一些历史和基础知识。首先介绍了世界上公认的第一台电子计算机诞生的年代，然后是有关20GB的硬盘容量的计算问题，接着是微机中西文字符所采用的编码以及计算机安全的定义。整体来看，这些选择题涉及了计算机的历史、存储容量、编码和安全等基础知识。