精美通用PPT模板 绿叶湖面主题.ppt

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样例文本A
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样例文本B
When CICS was delivered to Amoco with Teletype Model 33 ASR support, it caused the entire OS/360 operating system to crash (including non-CICS application programs). The majority of the CICS Terminal Control Program (TCP - the heart of CICS) and part of OS/360 had to be laboriously redesigned and rewritten by Amoco pany in Tulsa Oklahoma. It was then given back to IBM for free distribution to others.
In a few short years, CICS generated over $60 Billion dollars in new hardware revenue for IBM, and became their most-essful mainframe software product.
In early 1970, a number of the original developers, including Ben Riggins (the principal architect of the early releases) relocated to California and continued CICS development at IBM's Palo Alto Development Center. IBM executives did not recognize value in software as a revenue-generation product, until after federal law required software unbundling. In 1980, IBM executives failed to heed Ben Riggins' strong suggestions that IBM should provide their own EBCDIC-based operating system and integrated-circuit microprocessor chip for use in the IBM puter as a CICS intelligent terminal (instead of the patible ASCII-based Intel chip, and immature Microsoft 1980 DOS).
In 1974, CICS development responsibility was shifted to IBM's Hursley, United Kingdom Laboratory, where development work continues today.
样例文本C
COBOL的数据种类COBOL程序的数据,主要有以下3种:
变量(Variables)
常量(Literals)
表意常量(FigurativeConstants)变量和常量自不必说,说说表意常量。使用有特定意思的多个词组合成一个常量的代名词。好处是便于编码人员识别。比如:HIGH-VALUES、LOW-VALUES等可以表达一定意思的名称作为常量代名词。