Types of Personal Computers
If you are unfamiliar with the term personal computer, the term essentially refers to a multipurpose microcomputer that is designed for individual use. Personal computers are designed to be operated by the end user, not by a computer expert. This article will discuss the various types of personal computers and how they differ from each other. Also, we will briefly discuss the history of the personal computer industry. Let's begin with the first personal computers: the Apple I, the IBM 5150, the IMSAI 8080, and the MITS Altair 8800.
The Apple I Personal Computer was the first computer created by the company Apple. Steve Wozniak designed the computer, which was marketed as a complete system with a motherboard, CPU, RAM, and basic text/video chips. In addition to the Apple I itself, the company also produced a keyboard and enclosure for the computer, and the company sold the devices for an affordable price. The Apple I was the first product produced by the newly incorporated company Apple, and it was widely praised as a technological breakthrough.
Steve Jobs and Wozniak designed the first fully assembled computer, and it was sold for $400 thousand at an auction in November 2021. The original Apple I, assembled by Wozniak and Jobs in 1976, was sold for $400 thousand at an auction in November 2021. It is one of only 200 copies of the Apple I. But if you want to own one, you can still purchase an original Apple I and preserve it for future generations to enjoy.
Wozniak's vision was a breakthrough in personal computing. With this new technology, the world of computing is forever changed. This company was started by two high school friends, Steve Jobs and Steve Wozniak. They met at a computer convention in 1976 and began working together on a product. In 1977, they launched the Apple II, which introduced color graphics and a floppy disk drive. Both of these computers were incredibly successful, and Apple has been around ever since.
The IBM 5150 Personal Computer was the first microcomputer in the IBM PC model line and became the de facto standard for the PC compatible family of personal computers. The machine was introduced in 1981 and directed by Don Estridge in Boca Raton, Florida. It is widely considered a landmark computer. Here are a few interesting facts about the machine. Firstly, it is the first personal computer to use a standard keyboard. The computer was designed in Boca Raton by a team headed by Don Estridge.
The IBM 5150 was launched on August 12, 1981, and was the first personal computer to be available to the public. This PC was an important step for IBM, which had long viewed home computers as unappealing and unsuitable for most people. It was also the first PC to be marketed to consumers and businesses alike, and it ushered in the era of the personal computer. Since then, personal computers have become a staple of our households.
The IBM 5150 "PC" used 64K of RAM memory on its motherboard. Later versions used higher capacity memory chips and allowed up to 256K onboard, or 640K if an internal expansion card was added. The keyboard on the 5150 "PC" is similar to the keyboard found on the IBM Datamaster business computer. The 5150 Personal Computer was IBM's first compact stand-alone computer. The IBM Datamaster, released in the same year, was an all-in-one desktop word-processing system.
The IMSAI 8080 was an early microcomputer released in late 1975. Based on the Intel 8080 and 8085 microprocessors, it ran on the S-100 bus. It was also considered to be the first "clone" microcomputer, as it was a copy of the MITS Altair 8800. It is one of the most popular microcomputers of all time, and was the first machine to use the S-100 bus for communication.
The IMSAI 8080 was sold in 1976 for $439 as a kit and $620 assembled. It can now be found at auction for over $2100! For that same amount, you can buy a vintage IMSAI 8080 today for less than a third of what it cost in 1976. Just remember that $439 today equals $2,000 in 2021, so it is possible to make a profit by selling an old IMSAI 8080 Personal Computer!
The IMSAI 8080 had a surprisingly powerful operating system - IMDOS. Originally, the CP/M operating system was developed by MITS, but MITS refused to license it to other manufacturers. As a result, IMS approached Gary Kildall and got a non-exclusive license of CP/M version 1.3. This license evolved into IMDOS. A good example of this is the movie War Games.
MITS Altair 8800
The Altair 8800 was designed by MITS and released in 1975. It was based on the Intel 8080 CPU and featured on the cover of Popular Electronics magazine in January 1975. It was sold through mail order, but also appeared in hobbyist magazines such as Radio-Electronics. This computer was very popular among the hobbyist crowd, and even a magazine cover photo was published. Today, the Altair is still among the most popular hobbyist computers available.
The name Altair is a bit confusing. The original name is not Altair, but PE-8, which stands for Popular Electronics 8-bit. The name Altair came from a popular science fiction story by William Shatner. In the story, an actor named Les Solomon asks his daughter what the computer was called on Star Trek. The name Altair was decided upon after Ed Roberts' suggestion that he name future versions of the computer as "Altair 8800." The name was stenciled on the front panel.
MITS received a flood of money, and they began marketing the product in various magazines. The company also advertised in Byte, Creative Computing, and Popular Electronics. This increased sales of Altair 8800s. Despite the slow delivery, many people bought the computers, waiting for the parts. It became an extremely popular hobbyist computer, and the company eventually acquired Icom. The company then called itself MITS.
The Z-80 processor for personal computers was introduced in 1977. It is an 8-bit processor that has a 16-bit unidirectional address and data bus. This processor can address up to 65,536 bytes of RAM. In addition to its core instructions, the Z80 has a 13-bit external control bus, which contains control signals. It can run at speeds of up to 50 MHz. In addition to its core instructions, the Z80 is also compatible with a number of other processors, including the Intel 8085 and 8086.
The registers on a Z-80 chip are organized in pairs. Each pair contains 8 bits, which are typically treated as one 16-bit register. Each bit is ordered from 0 at the top of the chip to fifteen at the bottom. Thus, the top of the chip is the low-order byte, while the bottom is the high-order byte. Several companies produced machines based on this chip.
The Z80 uses an eight-bit opcode to specify registers. Normally, register instructions use three bits to specify the register. In the case of the ADD instruction, for example, the rrr bit specifies the register to use. Similarly, the opcode for the h'-bit indicates that the arithmetic operator is in an indirect state, and the L-bit is a direct instruction.
The Macintosh was a personal computer developed by Apple in 1984. Its first generation had limited memory and lacked a hard disk drive. This problem was addressed by many small companies, who offered memory expansion. The early prototypes used a switch to switch from green-on-black to black-on-white displays. But Jobs had different ideas. The new Macintosh II, introduced in 1987, had quadruple the memory, and a new ROM graphics language called Color QuickDraw. It was also compatible with multiple monitors.
The first Macintosh was designed to be manufactured in millions. Apple now manufactures them at a factory in Fremont, California, which can produce one machine every 27 seconds. The Macintosh is aimed at a diverse group of businesspeople, professionals, and college students. Its users transform information at their desk. According to the U.S. Bureau of Labor Statistics, there are 25 million knowledge workers in the U.S. today, yet only five percent of them are using desktop computers.
The Macintosh was one of the first personal computers to include a graphical user interface. As of early 1982, the first Macintosh had the signatures of Steve Jobs and the Lisa developers molded on the inside case. While the Macintosh did not gain a significant share of the personal computer market, it did make a splash. The first Macintosh 128K sold for 50,000 units in seventy-four days. The Macintosh went on to become a popular desktop publishing platform and education tool.
PC software is a type of application software that runs on a personal computer. There are many types of user-written software, such as word processor macros, spreadsheet templates, scientific simulations, graphics and animation scripts, email filters, and more. User-written software is an important component of a computer's operation, but many users tend to overlook its importance. International Data Corporation reported that in Q2 2011, China overtook the US in PC shipments. This was attributed to the growth of emerging markets like China, and relative stagnation in more mature regions such as the United States.
Personal computers are typically inexpensive microcomputers, designed for individual use. Before the PC was created, computers were built for businesses or for multiple users attached to one large computer. Resources were shared among the many users of the large machine. The PC was so successful in the 1980s that Time magazine named it "Man of the Year". Advancements in technology had made it possible to build a small computer for a single user. PC software is designed to work on both personal computers and business-oriented computers.
The Malwarebytes security software offers comprehensive protection from a variety of malicious software, including ransomware. The program's innovative Hyper Scan mode automatically targets potential threats and minimizes the download of destructive programs. This PC software is available for personal computers, Macs, and mobile devices. Malwarebytes also protects computers from phishing attacks and other online threats. It's free to download and install, and can provide a high level of security for any PC.