1623 ⟶ Wilhelm Schickard's Calculating Clock
Wilhelm Schickard drew a calculating clock on a letter to Ke...Year
1623
1642
1672
🕰️ Wilhelm Schickard's Calculating Clock
Wilhelm Schickard drew a calculating clock on a letter to Kepler. This will be the first of five unsuccessful attempts at designing a direct entry calculating clock in the 17th century (including the designs of Tito Burattini, Samuel Morland and René Grillet).⟶

Calculating MachinesMechanical ComputationEarly ComputingTechnologyHardwarePrecursors to Computers

➕ Blaise Pascal's Mechanical Calculator
Blaise Pascal invented a Mechanical calculator, the first digital calculating machine.⟶

Calculating MachinesMechanical ComputationTechnologyHardwareEarly ComputersPascaline

➕ Gottfried Wilhelm Leibniz's Stepped Reckoner
Gottfried Wilhelm Leibniz improved the earlier machines, making the Stepped Reckoner to do Multiplication and division.⟶

Calculating MachinesMechanical ComputationTechnologyHardwareEarly ComputersStepped Reckoner
