1-Year PlayStation Plus Membership (PS+) (USA) | PlayStation/PS3/PS4/PS5 | CDKeys

1 (one, unit, unity) is a number, numeral, and glyph. It is the first and smallest positive integer of the infinite sequence of natural numbers. This fundamental property has led to its unique uses in other fields, ranging from science to sports, where it commonly denotes the first, leading, or top thing in a group. 1 is the unit of counting or measurement, a determiner for singular nouns, and a gender-neutral pronoun. Historically, the representation of 1 evolved from ancient Sumerian and Babylonian symbols to the modern Arabic numeral.

In mathematics, 1 is the multiplicative identity, meaning that any number multiplied by 1 equals the same number. 1 is by convention not considered a prime number. In digital technology, 1 represents the "on" state in binary code, the foundation of computing. Philosophically, 1 symbolizes the ultimate reality or source of existence in various traditions.

P.S. commonly refers to:

• Postscript, writing added after the main body of a letter

PS, P.S., ps, and other variants may also refer to:

PlayStation is a video gaming brand owned and produced by Sony Interactive Entertainment (SIE), a division of Japanese conglomerate Sony. Its flagship products consists of a series of home video game consoles produced under the brand; it also consists of handhelds, online services, magazines, and other forms of media.

The brand began with the first PlayStation home console released in Japan in 1994 and worldwide the following year, which became the first console of any type to ship over 100 million units, which made PlayStation a globally recognized brand. Since then there have been numerous newer consoles—the most recent being the PlayStation 5 released in 2020—while there have also been a series of handheld consoles and a number of other electronics such as a media center and a smartphone. The main series of controllers utilized by the PlayStation series is the DualShock, a line of vibration-feedback gamepads. SIE also operate numerous online services like PlayStation Network, the PlayStation Store, and the subscription-based PlayStation Plus, which may also offer non-gaming entertainment services; the PlayStation Network has over 103 million active users monthly as of December 2019.

The series also has a strong line-up of first-party games due to PlayStation Studios, a group of many studios owned by Sony Interactive Entertainment that exclusively developed them for PlayStation consoles. In addition, the series features various budget re-releases of games by Sony with different names for each region; these include the Greatest Hits, Platinum, Essentials, and The Best selection of games. It is also known for the four iconic PlayStation face buttons (, , , ) and has been known for its numerous marketing campaigns, the latest of which being the "Greatness Awaits" and eventually, "Play Has No Limits" commercials in the United States.

The year is a unit of time based on the roughly 365⁠1/4⁠ days taken by the Earth to revolve around the Sun. The modern calendar year, as reckoned according to the Gregorian calendar, approximates this cycle.

The term 'year' is also used to indicate other periods of roughly similar duration, such as the roughly 354-day cycle of twelve of the Moon's phases (see lunar calendar), as well as periods loosely associated with the calendar or astronomical year, such as the seasonal year, the fiscal year, the academic year, etc.

Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by changes in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar regions around the planet, four seasons are generally recognized: spring, summer, autumn, and winter. In tropical and subtropical regions, several geographical sectors do not present defined seasons; but in the seasonal tropics, the annual wet and dry seasons are recognized and tracked.

By extension, the term "year" can also be applied to the time taken for any astronomical object to revolve around its primary, as for example the Martian year of roughly 1.88 Earth years.

The term can also be used in reference to any long period or cycle, such as the Great Year.