What is the Mac system?

Measurement and Control (measurement and control)

1. Apple Computer 2. Media access control layer 3. Membrane attack compound 4. The maximum allowable concentration is 5. Mandatory access control. Hash function value with key 7. Media access control 8. The lowest alveolar concentration is 9. Call of Duty 4 Professionals 10. Cosmetic brand 1 1. Major adverse change clause 12.

1. Apple Computer Company

Measurement and Control (measurement and control)

MAC desktop

MAC(MACintosh) is different from computer (PC) equipped with Microsoft Windows system. It should be noted that the PC here is not the abbreviation of personal computer, but comes from the PC-DOS system originally sold by IBM (the predecessor of Windows). Later, all computers equipped with Windows systems were called PCs, while Apple computers were called Macs because they were equipped with their own Mac OS systems. Chinese mainland once used the translated name "Macintosh", but it has been rare recently. The Macintosh Users Association in Chinese mainland also changed the computer name to "Macintosh". Mainland residents sometimes call Macintosh "Mac".

brief introduction

Mac operating system

operating system

Edit this paragraph

brief introduction

Macintosh computer (collectively referred to as Apple Computer)

Apple I

Apple II

Apple three generations

Elizabeth's nickname

McIntosh raincoat

iMac

Super Mac G3

Super Mac G4

Power Mac G4 Rubik's Cube

Power Mac G5 (used for high-end, latest-generation workstations, with PowerPC processor, discontinued when Apple switched to Intel)

EMac (all-in-one machine with PowerPC processor and crt for low-end education market, which was discontinued when Apple switched to Intel in 2006)

PowerBook (high-end laptop with PowerPC processor, discontinued when Apple turned to Intel in 2006)

IBookG3/G4 (notebook computer with PowerPC processor, low-end market, discontinued after Apple switched to Intel in 2006)

Xserve (xserve RAID) (201165438+Apple1October 30th)

IMac (all-in-one machine, belonging to Volkswagen)

Mac mini (desktop computer with the same size as lunch box and using Intel Core 2 Duo processor)

Macbook Pro (the replacement of PowerBook after Apple switched to Intel)

Macbook (the replacement of iBook after Apple switched to Intel)

Mac pro (the replacement of Power Mac after Apple switched to Intel)

MacBook Air (ultra-thin laptop with Intel Core 2 processor)

Media access control

Edit this paragraph

Mac operating system

Mac system is a special system for MAC, and it can't be installed on ordinary PC in general. Mac wallpaper Apple not only produces most of the hardware of the MAC, but also develops its own operating system. Next, let's look at its operating system.

MAC's current operating system has reached OS 10, and its code name is MAC OS X (the Roman numeral for x is 10), which is the biggest change since the birth of MAC computer 15. The new system is very reliable, and many of its functions and services reflect Apple's philosophy.

In addition, the computer viruses that are raging now are almost all aimed at Windows. Because the architecture of MAC is different from that of Windows, it is rarely attacked by viruses. The interface of MAC OSX operating system is very unique, highlighting vivid icons and man-machine dialogue (the graphical man-machine dialogue interface originally came from the Palo Alto Research Center of Xerox, and Apple developed its own graphical interface based on its achievements, which was later borrowed by Microsoft Windows and widely used in Windows). Apple can produce computers according to its own technical standards and independently develop the corresponding operating system, which shows that its technology and strength are extraordinary. For example, Apple, like a combination of Dell and Microsoft, is "both talented and beautiful" in software and hardware.

Edit this paragraph

operating system

System 1\2\3\4\5\6\7 (at most, 1, 2, 3, 4 and 5 only support monochrome).

Mac OS 8.x

mac os x 9.x

Mac OS X v 10.0

Mike OS X v 10. 1 Mike OS X v 10.2 "Jaguar"

Mike OSXV10.3 "Panther"

Mac OS X v 10.4 "tiger" (Intel processor is supported for the first time

Mike OS X v 10.5 "Leopard"

Mac OS X v 10.6 "snow leopard" (launched in September 2009, this version of the MAC system will only provide support for Intel processors, and add 64-bit full support. )

Mac OS X v 10.7 "lion" (expected to be listed in 20 1 1) message authentication code.

Message authentication code is also called encrypted checksum.

A discriminant function.

The principle of message authentication code is to use public functions and keys to generate a fixed-length value as an authentication identifier, and use this identifier to authenticate the integrity of the message. Use the key to generate a fixed size data block, that is, MAC, and then add it to the message, and then transmit it. The receiver authenticates with the key shared with the sender, and so on.

MAC cosmetic

MACcosmetics, founded in 1984, was originally founded in Canada and is now owned by Estee Lauder in the United States. The first MAC make-up was born in the spotlight to meet the photographic needs of professional make-up. From the first batch of products, MAC cosmetics achieved success with its rich colors and unique formula, and established its position as a professional makeup brand.

MAC always pursues the integration of fashion, happiness and fantasy, and respects the rights and freedoms of people of different races, genders and ages to pursue dreams and beauty, and the efforts of MAC cosmetics company in social undertakings such as AIDS, anti-abuse and environmental protection are even more commendable. In 2005, actress Pamela Anderson became the new spokesperson of MAC Cosmetics Company.

Open classification:

Information security, network protocol, Apple computer, occupational health, medical anesthesia.

2. The media access control layer edits the original terms.

3. Edit the original terms of membrane attack complex.

4. Edit the original term of maximum allowable concentration.

5. Edit the mandatory access control of the original term

6. Edit the original item of the hash function value with the key.

7. Media Access Control Edit Original Terminology

8. The minimum alveolar concentration has been edited.

9. Call of Duty 4 Professional Players Edit Original Intent

10. Original meaning of cosmetics brand editing

1 1. Edit the original intention of major adverse change clauses.

12. The original meaning of editing Ma Kang Kai agar medium.

13. Manual alarm station edits original meaning item.

The definition of "MAC" in the English-Chinese Dictionary (source: Baidu Dictionary);

Measurement and Control (measurement and control)

Abbreviations.

1. Media Access Control Computer Media Access Control

Apple personal computer

KK: []

DJ: []

Noun (short for noun)

1. Say hello to strangers

2. Scottish

man

KK: []

DJ: []

mouth

1. British raincoat

2. American double-row tweed jacket