Computer History

What is the definition of a computer? Give both

1. An electronic device used for storing and processing, typically in binary form, according to instructions given to it in a variable program.

2. An electronic device that accepts input, processes that input and creates output( desirable or undesirable)

What are the 4 reasons why computers were made?

• It helps eliminate human error

• It makes tasks easier to accomplish

• Easier ways to communicate

• Allows for greater development and design

Name in order the important events in computer history. ( 12)

1. The abacus

2. Mechanical calculator

3. Jacquard loom

4. Difference engine

5. Analytic engine

6. The first programmer ( Ada Lovelace)

7. The census tabulator

8. Differential Analyzer

9. Harvard Mark II

10. Harvard Mark II

11. ENIAC

12. Z1-Z4

Personal computers

A general purpose, cost effective computer that is designed to be used by a single end user

Desktop computer

A computer that fits on or under a desk. It used peripheral devices for interaction such as a mouse and keyboard for input, and display devices like a monitor, projector, or television.

Laptop

A portable computer that is more efficient and nearly as powerful as a desktop computer. Nickname: notebook

Netbooks

A portable computer with half the size of a regular laptop. Nicknames: mini notebook, mini laptop, or su notebook.

Personal Digital Assistant

A computer that fits in the palm of your hand to help collect such information as contacts, files, appointments, and programs.

Work stations

An individual computer or group used by a single user to perform work.

Servers

A powerful computing device that accepts and responds to requests made over a network. The devices it serves are called clients

Main frame

A big iron computer, a main frame, is a large central computer with more memory, storage space, and processing power than a standard computer.

Super computer

A computer or array of computers that act as one collective machine capable of processing enormous amounts of data. They are used for very complex jobs such as nuclear research or forecasting weather patterns.

Wearable computers

Electronic devices word on the human body such as a digital watch.

Data Centers

a facility used to store computers, servers, routers, switches, and other networking equipment in a single location. Nickname: DC

Cloud computing

Services provided over a network by a collection of remote servers. It provides massive, distributed storage and processing power that can be accessed by any internet connected.

Explain the information processing cycle

1. Input: data or set of instructions that is entered in the computer.

2. A.Processing: the computer takes input, understands it, and does what it says.

   B. Storage: keeps data/ info for short time or longer.

3. Output: the computer gives the data or instruction results.

Name of the German inventor of the Z1-Z4

Konrad Zuse

Name 4 computer companies

Apple

Sony

Lenovo

Microsoft

Dell