A range of astronomy software is available and used by amateur astronomers, including software that generates maps of the sky, software to assist with astrophotography, observation scheduling software, and software to perform various calculations pertaining to astronomical phenomena.

In computer systems, an algorithm is basically an instance of logic written in software by software developers to be effective for the intended " target " computer ( s ), in order for the target machines to produce output from given input ( perhaps null ).

* Static code analysis – the analysis of computer software that is performed without actually executing programs built from that

Provided that an applet is hosted by an operating system, it can function as any other normal software application but is and performs only a small set of tasks.

AES is based on a design principle known as a substitution-permutation network, and is fast in both software and hardware.

The Apache Software Foundation ( ASF ) is a non-profit corporation ( classified as 501 ( c )( 3 ) in the United States ) to support Apache software projects, including the Apache HTTP Server.

The 68000 has a 16-bit external data bus so must transfer 32 bits of data in two consecutive steps, a technique called multiplexing: all this is transparent to the software, which was 32-bit from the beginning.

Although the hardware is limited to four separate sound channels, software such as OctaMED uses software mixing to allow eight or more virtual channels, and it was possible for software to mix two hardware channels to achieve a single 14-bit resolution channel by playing with the volumes of the channels in such a way that one of the source channels contributes the most significant bits and the other the least.

The quality of the Amiga's sound output, and the fact that the hardware is ubiquitous and easily addressed by software, were standout features of Amiga hardware unavailable on PC platforms for years.

With safety critical systems, the software is very strictly tested.

) Compositing software is used to combine images, and makes extensive use of alpha compositing techniques.

Speeding up the low portion of memory is particularly useful on 6502 derived machines because that processor has a faster addressing mode for the first 256 bytes and so it is common for software to put any variables involved in time critical sections of program into that region.

The Electron is widely misquoted as operating at 1. 79 MHz after measurements derived from speed testing against the thoroughly 2 MHz BBC Micro for various pieces of ' common software '

Electron software is predominantly archived in the UEF file format.

He is known for his analysis of complex proprietary protocols and algorithms, to allow compatible free and open source software implementations.

Some clever program counter catches meant that the ordinary system ROMs and any software using the OS calls could function without significant modification, making substantially more memory available for BASIC, View, Viewsheet and almost every other business application.

Although not as well supported by the biggest software publishers as rivals like the Commodore 64 and Sinclair ZX Spectrum, a good range of games were available for the Electron.

The color memory was also available in the " normal " TRS-80 and CP / M text modes, which meant that existing TRS-80 and CP / M software could be easily modified to add color.

Stand-alone official AIM client software includes advertisements and is available for Microsoft Windows, Windows Mobile, Mac OS, Mac OS X, Android, iOS, BlackBerry OS.

However, there are resources available that facilitate this process by offering free instructions on how to draw a 3D beading diagram using free software available from inkscape. org, in the hopes that clearer beading diagrams will allow easier access to 3D beading patterns.

In the UK, the BBC Micro based OBBS software, available from Pace for use with their modems, optionally allowed for colour and graphics using the Teletext based graphics mode available on that platform.

Powerful solvers are readily available as free and open source software.

Commonly available astronomical software can plot the orbits of these known comets.

Several implementations of the Common Lisp standard are available, including free and open source software and proprietary products.

On August 6, 2012, CDE was freed under the LGPL free software license. Its source code is available at SourceForge.

The results of the last census are also available via the interactive model based software.

* Developers must make themselves available to test users and colleagues alike throughout the creation process of a software system.

Content-control software determines what content will be available or perhaps more often what content will be blocked.

NetAlert, the software made available free of charge by the Australian government, was allegedly cracked by a 16 year old student, Tom Wood, less than a week after its release in August 2007.

Today many of such blacklists, either free or subscription-based, are available mainly for use by email administrators and anti-spam software.

SGML allows for public identifiers to be mapped to system identifiers in catalogs that are optionally made available to the URI resolvers used by document parsing software.

The result was the inevitable confusion with customers upset that a particular piece of software was not available for the Disk system that they had.

For a recursive or otherwise re-entrant routine, a stack, hardware if available, software if not, must be used instead.

* ANIMAL ( image processing ), an interactive software environment for image processing

* " Atlas " was the former name for ASP. NET AJAX, Microsoft software, a set of ASP. NET extensions providing Ajax functionality

The terms architect and architecture are also used in the disciplines of landscape architecture, naval architecture and often information technology ( for example a software architect ).

It was designed to avoid some of the perceived problems with FORTRAN for backward compatibility with historic Buran ( spacecraft ) ALGOL software.

* Alfred ( software ), an application launcher for Mac OS X

The Amiga's native ability to simultaneously play back multiple digital sound samples made it a popular platform for early " tracker " music software.

Expansion boards were made by Richmond Sound Design that allow their show control and sound design software to communicate with their custom hardware frames either by ribbon cable or fiber optic cable for long distances, allowing the Amiga to control up to eight million digitally controlled external audio, lighting, automation, relay and voltage control channels spread around a large theme park, for example.

See Amiga software for more information on these applications.

* Apache Software License, an open-source license for software

* Application Services Library, a process model for the maintenance of software applications

Although cheap and effective in enabling use of some software that only used official ROM entry points for text output, this solution proved very slow because the Electron had to be placed into an 80-byte-pitch display to be able to get anywhere near to reproducing mode 7 and the CPU spent a lot of time drawing approximations of mode 7 characters and graphics that in a hardware solution would be achieved without any CPU processing.

A software ROM worked around this by duplicating the data intended for a mode 7 display in memory.

Although this produced a mode 7 that barely impacted upon CPU performance and gave the same visual quality as the BBC Micro, it remained compatible only with software that used the ROM routines for outputting text and graphics and still used 10 kB of memory for the display.