Click the top PC Enthusiasts to follow us Recently, Huawei’s Kirin 9000 mobile platform won the “Most Loved 5G Flagship Chip of 2021” award from the Communication World. As a chip released in 2020, the Kirin 9000 achieved an impressive feat of “one generation defeating three generations”, and it holds its ground well against the … Read more
It has been 11 years since the release of the first Kindle, and the global e-book reading market is no longer as “blank” as it once was. Nowadays, various products are flourishing. This article from the “Consumer Electronics” review team has selected three representative e-book products for comparison: BOOX Note +, reMarkable, and Sony DPT-CP1. … Read more
Source: Chip Theory Introduction: Today’s CPUs or SoCs are basically integrated with multiple CPU cores on a single chip, forming what is commonly referred to as 4-core, 8-core, or more core CPUs or SoC chips. Why adopt this method? How do multiple CPU cores work together? Is more CPU cores always better? With these questions … Read more
Source: Chip Theory Abstract: Previous articles have mentioned that there are many classification methods for chips, with varieties as numerous as the stars in the night sky, making it impossible to enumerate them all. This article narrows the focus to high-end general-purpose chips, specifically CPUs. We will find that there are also many types of … Read more
1. Computer Architecture Before understanding computer architecture, let’s first get to know a few key figures who made significant contributions to the invention of computers. 1. Charles Babbage The father of the mechanical computer, a British nobleman, who built the first difference engine single-handedly, achieving a calculation precision of 6 decimal places. Later, he designed … Read more
The reduction of amides is also a commonly used method for synthesizing amines, often employed for the monoalkylation of primary amines. The most common method for reducing amides to amines is through LAH under heated reflux. However, when sensitive functional groups are present within the molecule, such as halogens (especially bromine and iodine) on an … Read more
Free amines easily react with NaOH or NaHCO3 under alkaline conditions controlled by a mixture of dioxane and water to produce N-tert-butoxycarbonylated amines via reaction with Boc2O. This is one of the commonly used methods for introducing Boc, which has the advantage of producing minimal interfering by-products that are easy to remove. For some nucleophilic … Read more
Welcome to Join the Steel Plant Manager QQ Group A R steel High Temperature Manganese SteelAbnormal Steel Abnormal Steel; Non-Normal SteelAluminium-Steel Cable Steel-Aluminium CableAluminized Steel Aluminized SteelAluminum Nickel Steel Aluminium Nickel SteelAnchored Steel Trestle Anchored Steel TrestleAngle Steel Ruler Steel Angle RulerAnisotropic Steel Anisotropic Steel SheetAnisotropy Silicon Steel Anisotropic Silicon Steel SheetAnnealed Sheet Steel Annealed … Read more
1. Introduction Acyclic compounds are important intermediates in the synthesis of many pharmaceuticals, and the synthesis of acyclic compounds is a very important part of organic synthesis. They are generally prepared by several methods: 1. Dehydration of amides 2. Reaction of aliphatic halides or sulfonate esters 3. Cyanation of aromatic halides 4. Other conversions from … Read more
A abd┃abdominal 腹部的 ABK┃aphakic bullous keratopathy 无晶体性大泡性角膜病变 abn┃abnormal 异常 ac┃before meals 餐前 AC┃anterior chamber 前房 ACC┃accommodation 调节 ACG┃angle-closure glaucoma 闭角青光眼 ACIOL┃anterior chamber intraocular lens 前房型眼内晶体 add┃adduction or reading additional power 内收；阅读另加屈光力 ad lib┃as desired 当需要时 adv┃advanced 高度 AIBSE┃acute idiopathic blind spot enlargement 急性特发性盲点扩大综合征 AIDS┃acquired immunodeficiency syndrome 艾滋病 AION┃arteritic ischemic optic neuropathy 动脉缺血性视神经病变 ┃anterior ischemic optic … Read more