Cunningham radio tubes manual by RCA/Cunningham

By RCA/Cunningham

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The increasing importance of computer networks to modern organizations and the rapid spread of online commerce have created a corresponding concern among law enforcement agencies and security services about their vulnerability to cybercrimes. This perceived threat of cybercrime to national and international economies, security and social and political relations has questioned the relevance of existing law enforcement practices. The detection of cybercrime often requires a good understanding of the new media and the use of advanced computer skills.

The term is something of a misnomer, because what it actually refers to is communication between computer users who can exchange messages and data with one another through their connection to a network, such as the Internet. There are two main types of CMC: asynchronous communication and synchronous communication. Asynchronous communication involves the exchange of text-based messages, which, although it can be very rapid, does not actually involve what would in orthodox terms be regarded as conversation.

The view of these systems as ‘people’s computers’ was reinforced by the role played by hobbyists, who began to meet across the US and develop the potential of these machines. Exactly who built the first PC, and when, is a matter of some debate, but the first machine with mass appeal and a price tag of $400 (which was a lot of money for most people in 1975) was developed by H. Edward Roberts and called the Altair. Combining this system and those like it with BASIC and what became BIOS produced a computer that one could program.

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