Bare machine (or bare metal), in computer parlance, means a computer executing instructions directly on logic hardware without an intervening operating system.
 Modern operating systems evolved through various stages, from elementary to the present day complex, highly sensitive systems incorporating many services.
 After the development of programmable computers (which did not require physical changes to run different programs) but prior to the development of operating systems, sequential instructions were executed on the computer hardware directly using machine language without any system software layer.
 This approach is termed the "bare machine" precursor to modern operating systems.
 Today it is mostly applicable to embedded systems and firmware generally with time-critical latency requirements, while conventional programs are run by a runtime system overlaid on an operating system.
In some operating systems, the null device is a device file that discards all data written to it but reports that the write operation succeeded.
 This device is called codice_1 on Unix and Unix-like systems, codice_2 or codice_3 on DOS and CP/M, codice_4 on Windows NT, codice_5 on newer Windows systems, codice_6 on Amiga operating systems, and the codice_7 on OpenVMS.
 In Windows Powershell, the equivalent is codice_8.
 It provides no data to any process that reads from it, yielding EOF immediately.
 In IBM DOS/360, OS/360 (MFT, MVT), OS/390 and z/OS operating systems, such files would be assigned in JCL to DD DUMMY.
This is a list of operating systems with a sharp security focus.
 Here, "security-focused" means that the project is devoted to increasing the security as a major goal.
 As such, something may be secure without being "security-focused."
 For example, almost all of the operating systems mentioned here are faced with security bug fixes in their lifetime; however, they all strive consistently to approach all generic security flaws inherent in their design with new ideas in an attempt to create a secure computing environment.
 Security-focused does not mean security-evaluated operating system, which refers to operating systems that have achieved certification from an external security-auditing organization.
 An operating system that provides sufficient support for multilevel security and evidence of correctness to meet a particular set of government requirements is called a "trusted operating system".
These tables provide a comparison of operating systems, of computer devices, as listing general and technical information for a number of widely used and currently available PC or handheld (including smartphone and tablet computer) operating systems.
 The article "Usage share of operating systems" provides a broader, and more general, comparison of operating systems that includes servers, mainframes and supercomputers.
This is a list of file formats used by computers, organized by type.
 Filename extensions are usually noted in parentheses if they differ from the file format name or abbreviation.
 Many operating systems do not limit filenames to one extension shorter than 4 characters, as was common with some operating systems that supported the File Allocation Table (FAT) file system.
 Examples of operating systems that do not impose this limit include Unix-like systems, and Microsoft Windows NT, 95, 98, and Me which have no three character limit on extensions for 32-bit or 64-bit applications on file systems other than pre-Windows 95 and Windows NT 3.5 versions of the FAT file system.
 Some filenames are given extensions longer than three characters.
The usage share of desktop operating systems is the percentage of the operating systems (OS) used in computers (approximately market share) with so-called (retronym) desktop operating system, that also run on e.g. laptops. Originally the only computers running those operating systems, where desktop computers, while with the introduction of so-called new class of mobile operating systems, desktop got to be the part of the name of the former class of OSes.
 The computers running these OSes have the desktop metaphor style of GUI, unlike the mobile OSes.
 See also usage share of operating systems for breakdown of the share of desktop, mobile (and other styles of) operating systems, separately, and share of those all operating systems as part of across classes.
ACM SIGOPS is the Association for Computing Machinery's Special Interest Group on Operating Systems, an international community of students, faculty, researchers, and practitioners associated with research and development related to operating systems.
 The organization sponsors prestigious international conferences related to computer systems, operating systems, computer architectures, distributed computing, and virtual environments.
 In addition, the organization offers multiple awards recognizing outstanding participants in the field, including the Dennis M. Ritchie Doctoral Dissertation Award, in honor of Dennis Ritchie, co-creator of the renowned C programming language and Unix operating system.
The family of Macintosh operating systems developed by Apple Inc. includes the graphical user interface-based operating systems it has designed for use with its Macintosh series of personal computers since 1984, as well as the related system software it once created for compatible third-party systems.
A hypervisor or virtual machine monitor (VMM) is computer software, firmware or hardware that creates and runs virtual machines.
 A computer on which a hypervisor runs one or more virtual machines is called a "host machine", and each virtual machine is called a "guest machine".
 The hypervisor presents the guest operating systems with a virtual operating platform and manages the execution of the guest operating systems.
 Multiple instances of a variety of operating systems may share the virtualized hardware resources: for example, Linux, Windows, and macOS instances can all run on a single physical x86 machine.
 This contrasts with operating-system-level virtualization, where all instances (usually called "containers") must share a single kernel, though the guest operating systems can differ in user space, such as different Linux distributions with the same kernel.
Resorcerer is a resource editing program by Mathemaesthetics for the Macintosh operating systems.
 The most recent release was in 2001, when separate versions of Resorcerer 2.4.1 were released for Classic Mac OS and Carbon.
 Developed more recently than the traditional ResEdit, it supports far more resource types.
 Although no longer updated, it is still available for purchase.

Question: Resorcerer was created for the operating systems that were first created in what year?
Answer: 1984