var q differencebetweenserialandrandomaccessmemorychipsOn Sunday, North Korea detonated what they claimed to be a hydrogen bomb and the weapon test has prompted serious concern from the U. S. and allies. But what makes a. Background The effects of lesstight versus tight control of hypertension on pregnancy complications are unclear. Methods We performed an open, international. Although the braincomputer metaphor has served cognitive psychology well, research in cognitive neuroscience has revealed many important differences. Computer, Telephony and Electronics Glossary and Dictionary C CSGNetwork. Coms award winning online glossary of computer, telephony and electronics terms. This. Pass. Mark Mem. Test. Memory Diagnostic Tool. Mem. Test. 86 Technical Information. Whats New in Mem. Test. 86 for the UEFI platform Version 5 and later Mem. Test. 86 supports booting from both the newer UEFI platform and the traditional BIOS. You are here. Home Support Community Frequently Asked Questions Flash Memory Frequently Asked Questions FAQ Flash Memory Frequently Asked Questions. Synchronous dynamic randomaccess memory SDRAM is any dynamic randomaccess memory DRAM where the operation of its external pin interface is coordinated by an. The purpose of this webpage is to provide information a majority are secret or are hard to find on the iPhone, iPad, and iPod touch. It will mainly concentrate on. When booting from UEFI, Mem. Test. 86 has access to additional services not available in BIOS including. Native 6. 4 bit support. No longer requires the use of the PAE workaround to access more than 4. GB of memory. PAE Physical Address ExtensionMouse support, where supported by the underlying UEFI system. On older systems a keyboard is still required. Improved USB keyboard support. The keyboard now works on systems that fail to emulate IO Port 6. So Mac USB keyboards are now supported. Improved multi threading support, where supported by the underlying UEFI system. Reporting of detailed RAM SPD information. Timings, clock speeds, vendor names and much more. Support to writing to the USB drive that Mem. Test. 86 is running from for logging and report generation. In all prior Mem. Test. 86 releases, there was no disk support. Use of GPT. GUID Partition Table. ECC RAM support limited hardware support, ongoing development. Detection of ECC support in both the RAM and memory controller. Polling for ECC errors. Injection of ECC errors for test purposes. Support for DDR4 RAM and associated hardware, including retrieval and reporting of DDR4 specific SPD details. This includes DDR4 RAM that support Intel XMP 2. DDR4 RAM timings. Option to disable CPU caching for all tests. Having a configuration file to allow settings to be pre defined without the need for keyboard input. This can help with automation. Support for Secure Boot. Speed improvements of between 1. Especially for tests, 5, 8 9. This is the result more moving to native 6. PAE paging hack, switching compilers and using faster random number generation algorithms. Addition of 2 new memory tests to take advantage of 6. SIMD instructions. Support for network PXE boot for scalable, diskless deployment to multiple targets. See the Whats New page for a complete list of changes. See the feature comparison page for a summary of the differences between the various editions of Mem. Test. 86. If UEFI is not supported on the system, the older v. BIOS version is booted. Mem. Test. 86 can boot from a CD, USB flash drive or, with Linux systems, by the boot loader. LILO or Grub. Any Windows, Linux or Mac system may be used to create the. CD or USB flash drive. Once a Mem. Test. PCMac computer. Mem. Test. 86 Site Edition can also boot via network PXE boot for scalable provisioning of. Mem. Test. 86 to multiple client machines in the LAN network. In this configuration, no disks are. PXE Server and PXE boot enabled clients are required to support network boot. Back to top. Creating a Mem. Test. 86 boot disk in Windows. To create a Mem. Test. USB, CD or floppy in Windows, it is recommended that you download one of the Windows Mem. Test. 86 images. Note There is no difference in the resulting Mem. Test. 86 boot disk created using either the Windows or LinuxMac images. Create a bootable CD ROM Download the Windows Mem. Test. 86 ISO image. Right click on the downloaded file and select the Extract to Here option. This places the CD ROM ISO image into the current folder. Use the CD burning software available on your system to create a CD ROM using the extracted ISO image. Be sure that you create a CD. ISO file rather than placing a copy of the ISO file onto a data CD. Look for Burn Image from File or similar option. File menu of your CD burning software. Create a bootable USB Flash drive Download the Windows Mem. Test. 86 USB image. Right click on the downloaded file and select the Extract to Here option. This places the USB image and imaging tool into the current folder. Run the included image. USB tool, it should already have the image file selected and you just need to choose which connected USB drive to turn into a bootable drive. Note that this will erase all data on the drive. Create a bootable floppy v. Download the Windows Mem. Test. 86 floppy disk image. Right click on the downloaded file and select the Extract to Here option. This places the floppy disk image into the current folder. Creating a bootable floppy disk requires use of a third party program to write the floppy disk image to a disk. A number of programs are. Rawwrite is a recommended free program available at http www. A more robust solution is Win. Image, available at http www. Back to top. Creating a Mem. Test. 86 boot disk in LinuxMac. To create a Mem. Test. USB, CD or floppy in LinuxMac, it is recommended that you download one of the LinuxMac pre compiled Mem. Test. 86 images. Advanced users may wish to build from source and optionally make source code changes. Note There is no difference in the resulting Mem. Test. 86 boot disk created using either the Windows or LinuxMac images. Create a bootable CD ROM Download the LinuxMac Mem. Test. 86 ISO image. UN tar the package tar xvzf Mem. Test. 86 iso. An ISO image file and a README file will be created in the current directory. Use the CD burning software available on your system to create a CD ROM using the uncompressed ISO image. Be sure that you create a CD image from the ISO. ISO file onto a data CD. Look for Burn Image from File or similar option under the File menu of your CD burning software. On a Mac, you can use Disk Utility. See this forum post for details. Create a bootable USB Flash drive Download the LinuxMac Mem. Test. 86 USB image. UN tar the package tar xvzf Mem. Test. 86 usb. An image file and a README file will be created in the current directory. Follow instructions in the README to write the USB flash disk. Create a bootable floppy v. Download the Linux floppy disk image. UN tar the package tar xvzf Mem. Test. 86 floppy. An image file and a README file will be created in the current directory. Follow instructions in the README to write the floppy disk. Back to top. Usage. Booting Mem. Test. Mem. Test. 86 supports booting from both UEFI and BIOS systems. Most newer systems are able to run the UEFI. Mem. Test. 86, but all systems should be able to boot the traditional BIOS version. To start Mem. Test. CD ROM or USB flash drive into the appropriate drive and restart your computer. Note If running on a UEFI system, the UEFI BIOS must be configured to boot from the device that Mem. Test. 86 is installed on. Most systems have an optional boot menu that is enabled be pressing a key at startup often ESC, F9, F1. F1. 2 similar to the following. If available use the boot menu to select the correct drive. You may see both the UEFI and BIOS as separate options. Please consult your motherboard documentation for details. On a Mac, you need to hold down the c key while the computer is booting to boot from CD. To boot from USB, you need to hold down the. ALT Option key on the Mac keyboard while powering on the machine. Booting v. 5 or later in UEFI. All Mem. Test. 86 images supports dual booting of v. BIOS and v. 5 or later UEFI, depending on whether your system is configured to boot in UEFI or BIOS mode. If your system is booting v. You have an older system that does not support UEFIYour system supports UEFI but is configured in legacy mode ie. BIOSIf 1 is true, you system will not be able to boot Mem. Test. 86 v. 5 or later. You will need to upgrade to a new system that supports UEFI in order to run Mem. Test. 86 v. 5 or later. Whats the Difference Between a Hydrogen Bomb and a Typical Atomic Bomb On Sunday, North Korea detonated what they claimed to be a hydrogen bomb and the weapon test has prompted serious concern from the U. S. and allies. But what makes a hydrogen bomb scarier than a regular atomic bomb Check the news and youre guaranteed to hear to about conflict in some part of the world. ButRead more Read. For one, typical atomic bombs use nuclear fission, or the splitting of unstable uranium or plutonium atoms, to enhance a bombs blasting power. When the atoms are split, their subatomic neutrons go free, splitting up more atoms and unleashing devastating amounts of energy. These types of atomic bombs were the ones used in World War II against Japan, and theyre what experts believe North Korea has been testing up until now. But the tremors felt during Sundays test may have belonged to a hydrogen bomb blast, albeit a small onethough experts are still skeptical. Hydrogen bombs, or thermonuclear bombs, are actually a lot scarier than your run of the mill atomic bombs. They have thermonuclear fuel inside that can be ignited during the first stage, which is still powered by nuclear fission. But H bombs have another trick up their sleeve. They employ a second stage of reactions using nuclear fusion the force that powers the sun to basically magnify the destructive force of a typical atomic explosion. As the fusion of deuterium and tritium types of hydrogen occurs and atoms link together, they fire off neutrons to create even more destructive power in a chain reaction when they come in contact with the bombs uranium layer. If you thought atomic bombs were bad, these things are truly nasty. This is advice I hope you never need but should know anyway. A nuclear attack is everybodys worstRead more Read. To give you some perspective, one of the first high yield thermonuclear bombs the U. S. tested at Bikini Atoll in 1. Castle Bravo, was over 1,0. Little Boy, dropped on Hiroshima in 1. Enola Gay. That bomb killed 6. In fact, the Castle Bravo blast was so intense, its designers were taken by surprise when it went off. They miscalculated the yield of the blast by almost 1. Another way to explain the difference in devastation an atomic bomb could kill half of Manhattan a hydrogen bomb could vaporize the entire city of New York. Still, experts are skeptical that North Korea has the capability to build and detonate a hydrogen bomb. This isnt even the first time theyve claimed to do such a thing either. In January of 2. 01. The notion of an h bomb test is concerning, but its also possible North Korea tested whats known as a boosted atomic bomb. These boosted bombs just add a little thermonuclear gas to the bombs atomic core, increasing the blast yield, but not nearly as much as a hydrogen bomb. Theyre only about three times the blasting power as Little Boy. For now, well have to wait and see what U. S. reconnaissance can tell us in the coming days. Update Castle Bravo was not the first thermonuclear device tested by the U. S. that honor goes to Ivy Mikeit was the first in a series of high yield nuclear device tests. The text above has been changed to reflect the correct information. Thanks WShaw. Christian.