RT-11 was a small, single-user real-time operating system for DEC PDP-11 computers. It supported variants with different levels of multitasking and was written in assembly language. BKUNIX is an operating system for Soviet Elektronika BK computers based on the LSX UNIX kernel and licensed under the GPL. It supports up to three tasks and mounting up to three file systems. MICRODOS/OS-80 was an early disk operating system for the TRS-80 that was faster than TRSDOS and could run on 16K systems.

1. Group 6 Jennifer Dado Roselyn Dela Cruz Prisdel Dado Tresain Eugenio Herbert Seva

2. Jennifer Dado

3. Laguna State Polytechnic University Elektronika BK Soviet personal computer

8. Disk Xerox – one of ANDOS' utilites

12. Roselyn O. Dela Cruz

15. Work with MK-DOS 3.17: MCommander file manager

27. That’s all thank you!

28. Prisdel Dado

30. PascalDOS an operating system for the Soviet PCs BC-0010 and BC-0010-01 is designed for programming on the programming language Pascal, a compiler that is ISO . According to the internal challenges of the system was somewhat similar to the RT-11, although the data storage used commonly in the BC file system MicroDOS.

31. RT-11 ('RT' for Real Time ) was a small, single-user real-time operating system for the Digital Equipment Corporation PDP-11 family of 16-bit computers. RT-11 was first implemented in 1970 and was widely used for real-time systems, process control , and data acquisition across the full line of PDP-11 computers.

32. Directory listing using DIR utility under RT-11

33. ROM EMBEDED A ROM is embedded within an array of DRAM cells by changing a single mask in a DRAM fabrication process to selectively short circuit the DRAM capacitor lower electrode to its own wordline to create a read-only "1" or to the wordline of an adjacent cell to create a read only "0".

34. Users could choose from three variants with differing levels of support for multitasking RT-11SJ ( Single Job ) allowed only one task. RT-11FB (Foreground/Backgound) supported two tasks: a high-priority, non-interactive "Foreground" job, and a low-priority, interactive "Background" job. RT-11XM (eXtended Memory) provided support for memory beyond 64kb, but required a CPU with memory management hardware.

35. Turbo-DOS Master-Disk produces 4 different versions: 2.1NT without speeders , 2.1HS for Happy/Speedy, 2.1XF for XF551 and 2.1EX for 3 speeders: Happy+Speedy+XF551; supports 256k Xtra RAM / RD and supports use of batchfiles; has converter for DOS 3 and DOS 4; supports 4 formats, up to 360k; does not use RAM under OS ROM; DUP uses a Command Processor; all commands are avaiable via HELP key; works with XL/XE computers only, does not load/boot on Atari 400/800 no clue

36. BKUNIX is an operating system for Soviet Elektronika BK personal computer. It is based on LSX kernel (a version of UNIX V6 ) and licensed under the GNU General Public License . It is being developed by Sergey Vakulenko and Leonid Brukhis. BK-0010 and BK-0011M require different compilations of the kernel, but other parts are the same. The system supports up to three tasks at a moment and allows to mount up to three file systems .

37. BKUNIX

38. OS/Wasp Wasp MobileAsset is the #1 selling, industry-leading asset tracking solution for small to medium-sized businesses. Wasp has perfected an all-in-one solution to solve the asset tracking needs of government and educational

41. Tresain Eugenio

43. (AROS) AROS Research Operating System is a free software / open source implementation of the AmigaOS 3.1 APIs . Designed to be portable and flexible, ports are currently available for x86 -based and PowerPC -based PCs in native and hosted flavors , with other architectures in development.

44. AROS Research Operating System AROS showing its Cyrillic support

45. AROS family/development tree.

46. AtheOS was a free software operating system for x86 -based computers. It was initially intended as an AmigaOS clone [1] , but that objective was later abandoned. It is no longer in development, and has been superseded by the Syllable operating system.

47. The AtheOS Desktop

48. DexOS , is a free and open source 32-bit games console type operating system for 32-bit x86 computers . It was written in entirely assembly language using FASM (flat assembler) . The operating system's GUI was inspired by modern video game consoles but it also includes a Command Line Interface . It was designed to boot from a 1.44 MB floppy disk and its kernel is less than 100 KB .DexOS can also be booted from a CD , USB flash drive or hard drive .

49. Screenshot DexOS's GUI

50. EROS is a new operating system being implemented at the University of Pennsylvania. The system merges some very old ideas in operating systems with some newer ideas about performance and resource management. The result is a small, secure, real-time operating system that provides orthogonal persistence. The EROS research effort has ended. Work is continuing from the EROS code base in the CapROS project, which is led by Charlie Landau.

51. FAMOS is a true (believed to be the World First) Memory Operating System. It runs entirely in memory and is completely independent of all disk drives. FAMOS never needs to access a mass-storage device, except for the occasional purpose of non-volatile storage. Among its many features, FAMOS: - has a 32-bit 4Gb memory R/W editor (called FAME) - always tells you exactly where everything is in memory - has a working USB1.1 Host Controller/Driver and supports USB mass-storage devices (pendrives) and USB audio streaming devices

52. HelenOS has been ported to run on many different computer architectures including ARM , AMD64 (x86-64), IA32 , IA64 (Itanium), MIPS , PowerPC (32-bit only), and sparc64 . There are also incomplete ports to 64-bit PowerPC and the Xen hypervisor paravirtualization environment on IA32. It is developed mainly by staff and students at the Faculty of Mathematics and Physics at Charles University in Prague , with help from other contributors around the world.

54. KolibriOS (also known as KOS and Kolibri ) is a free operating system with a monolithic preemptive , real-time kernel , video drivers, for 32-bit x86 architecture computers, developed and maintained by The KolibriOS Project Team. KolibriOS is a fork of MenuetOS , written entirely in FASM ( assembly language ). However, C-- , C , C++ , Free Pascal , Forth , among other high-level languages and compilers, can also be used in user application development.

55. CMD is a command line interpreter that functions as a command line ( shell ). The current version is 0.26. The following is a list of the available commands: *Application management and processes ( kill , ps ) *Dealing with the file system ( cp , ls , del , rn , ...) *Other commands such as cls , ver , exit , shutdown , help , pause , echo , ends

56. KolibriOS

58. Herbert Seva

59. LoseThos LoseThos is a public-domain , x86-64 opcode , operating system , developed by Terry A. Davis. The stated goal of this project is "programming as entertainment." It is oriented toward video games, not the Internet, desk-top publishing or multimedia. It is not derived from any existing operating system, nor claims compatibility with such

68. Visopsys screenshot

72. Internal architecture of TAJ Operating System

73. thank you! That’s all