Operating System
ระบบปฏิบัติการคอมพิวเตอร์
by Nuttha Otanasap (ณัฏฐ์ โอธนาทรัพย์)
Computer Science Dept.,
South-east Asia University
Bangkok 10160 Thailand
email: auisuke@gmail.com
website:auisuke
auisuke.blogspot.com
Hi5:auisuke.hi5.com
Copyrights 2009 SE Asia University All Rights Reserved
Operating System
ระบบปฏิบัติการคอมพิวเตอร์
by Nuttha Otanasap (ณัฏฐ์ โอธนาทรัพย์)
Computer Science Dept.,
South-east Asia University
Bangkok 10160 Thailand
email: auisuke@gmail.com
website:auisuke
auisuke.blogspot.com
Hi5:auisuke.hi5.com
Copyrights 2009 SE Asia University All Rights Reserved
Memory management involves binding instructions and data to memory spaces using logical and physical addresses. The CPU uses base and limit registers to map the logical address space to the physical address space. Logical addresses are converted to physical addresses by adding the base register value. If a logical address is larger than the limit, an error occurs. Swapping and paging are techniques to manage memory fragmentation. Page tables implement paging by mapping logical page numbers to physical page frames. Task Manager displays memory usage and the working set of processes. NVRAM support and PFN locking help optimize memory usage. NUMA architectures scale multiprocessing by grouping CPUs and memory into nodes to reduce access latency.
การพัฒนาระบบตรวจเยี่ยมสำหรับการประเมินตนเอง
โดยใช้โมเดลเซกิ กรณีศึกษามหาวิทยาลัยเนชั่น จังหวัดลำปาง
A Development of Peer Visit System for Self Assessment
by SECI Model : A Case Study of Nation University
1. Mac OS X is the operating system developed by Apple Inc. for Mac computers. It is based on UNIX and has similarities to both UNIX and Microsoft Windows.
2. Major versions of Mac OS X include Cheetah, Puma, Jaguar, Panther, Tiger, Leopard, Snow Leopard, Lion and Mountain Lion. Each version brought new features and improvements to the operating system.
3. Key components of the Mac OS X desktop include the Dock, Menu Bar, Launchpad, Mission Control and System Preferences. The Dock contains application icons while Mission Control allows switching between applications and desktop spaces. System Preferences is used to customize settings.