Historical Dates and Firsts

The '@' symbol was selected by Ray Tomlinson in 1972 for use in email addresses to separate the user name from the host computer in the format user@host. This choice was made during the early development of email on ARPANET. The symbol was chosen because it was rarely used in names or other contexts at the time.

The IBM Personal Computer (model 5150) was released on August 12, 1981, marking a pivotal moment in computing history. It helped establish the de facto standard for PC architecture and popularized the term 'PC' for personal computers.

The IBM Personal Computer (model 5150) was introduced on August 12, 1981. It marked a significant milestone in personal computing history, establishing the IBM PC compatible standard that dominated the industry for decades.

Symantec released the first version of Norton Antivirus in 1990. It was developed by Peter Norton and became one of the most popular antivirus software products throughout the 1990s and 2000s, pioneering consumer-level antivirus protection.

The first x86 CPU, the Intel 8086, was released in 1978. This 16-bit processor established the architecture that would dominate personal computing for decades.

TIBCO Software was founded in 1985 as The Information Bus Company by Vivek Ranadive. The company originated from Ranadive's vision to create real-time information delivery systems for financial services, particularly for stock trading floors. Originally a project within Teknekron, TIBCO was spun out as an independent company in 1997. The company's early focus was on providing real-time market data to Wall Street firms before expanding into general enterprise middleware.

SQL Server's DATETIME data type can store dates from January 1, 1753 through December 31, 9999. The 1753 lower bound is due to the transition from the Julian to the Gregorian calendar in the British Empire.

IBM's Information Management System (IMS), one of the first hierarchical database management systems, was developed in 1966-1968. It was initially developed for the Apollo space program and became one of IBM's most important software products. 1968 is the correct answer among the options provided.

BlackBerry was developed and introduced in 1999 by Research In Motion (RIM). The first BlackBerry device was the BlackBerry 850, which was released in 1999 as a two-way pager.

The BlackBerry platform was originally developed in 1999 by Research In Motion (RIM), marking the beginning of its enterprise-focused mobile email solution. This timeframe aligns with the late 1990s mobile computing revolution. The 1999 launch date represents a significant milestone in smartphone evolution.

For a boundary range of 1900 to 2004, the traditional two-value boundary testing covers values just inside and outside the limits: 1899 (invalid low), 1900 (valid low), 2004 (valid high), and 2005 (invalid high). This makes option 628624 the correct choice.

Dallas Semiconductor was founded in 1984 and later became part of Maxim Integrated. The company developed the iButton technology used in Java Rings.

The Java Ring was first introduced at Celebration School in Florida as part of a pilot program for student identification and applications. It was demonstrated at the JavaOne Conference (not JavaTwo) in Orlando, but Celebration School was the initial deployment site.